3.87 is what percent of 3.1 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 3.1 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 3.1, so we can write it down as 100%=3.1.
4. We know, that x% equals 3.87 of the output value, so we can write it down as x%=3.87.
5. Now we have two simple equations:
1) 100%=3.1
2) x%=3.87
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=3.1/3.87
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 3.87 is what percent of 3.1

100%/x%=3.1/3.87
(100/x)*x=(3.1/3.87)*x       - we multiply both sides of the equation by x
100=0.80103359173127*x       - we divide both sides of the equation by (0.80103359173127) to get x
100/0.80103359173127=x
124.83870967742=x
x=124.83870967742

now we have:
3.87 is 124.83870967742% of 3.1