Finding the Fourth Proportional to 82.81, 114.25 and 50.05

Step by Step Solution

1. Step 1: Write the proportion equation
   82.81 : 114.25 = 50.05 : x
2. Step 2: Convert to fraction form
   82.81/114.25 = 50.05/x
3. Step 3: Cross multiply
   82.81x = 114.25 × 50.05
4. Step 4: Simplify right side
   82.81x = 5,717.39
5. Step 5: Solve for x
   x = 5,717.39/82.81
6. Step 6: Final answer
   x = 69.05