Step 1:
The first step to converting 51451.403172465 to a fraction is to re-write 51451.403172465 in the form p/q where p and q are both positive integers. To start with, 51451.403172465 can be written as simply 51451.403172465/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 51451.403172465, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 51451.403172465/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 51451.403172465/1 each by 1000000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 51451.403172465 as a fraction:
257257/5 / 1