Finding the Fourth Proportional to 73.10, 100.82 and 51.30

Step by Step Solution

1. Step 1: Write the proportion equation
   73.10 : 100.82 = 51.30 : x
2. Step 2: Convert to fraction form
   73.10/100.82 = 51.30/x
3. Step 3: Cross multiply
   73.10x = 100.82 × 51.30
4. Step 4: Simplify right side
   73.10x = 5,171.81
5. Step 5: Solve for x
   x = 5,171.81/73.10
6. Step 6: Final answer
   x = 70.75