49.75 is what percent of 128.8 - 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 128.8 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 128.8, so we can write it down as 100%=128.8.
4. We know, that x% equals 49.75 of the output value, so we can write it down as x%=49.75.
5. Now we have two simple equations:
1) 100%=128.8
2) x%=49.75
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%=128.8/49.75
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 49.75 is what percent of 128.8

100%/x%=128.8/49.75
(100/x)*x=(128.8/49.75)*x       - we multiply both sides of the equation by x
100=2.5889447236181*x       - we divide both sides of the equation by (2.5889447236181) to get x
100/2.5889447236181=x
38.625776397516=x
x=38.625776397516

now we have:
49.75 is 38.625776397516% of 128.8