Home / 87,790.97-121,151.73-47,505.15

Finding the Fourth Proportional to 87,790.97, 121,151.73 and 47,505.15

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Solution

The fourth proportional to 87,790.97, 121,151.73 and 47,505.15 is: 65,557.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,790.97 : 121,151.73 = 47,505.15 : x
  2. Step 2: Convert to fraction form
    87,790.97/121,151.73 = 47,505.15/x
  3. Step 3: Cross multiply
    87,790.97x = 121,151.73 × 47,505.15
  4. Step 4: Simplify right side
    87,790.97x = 5,755,331,106.41
  5. Step 5: Solve for x
    x = 5,755,331,106.41/87,790.97
  6. Step 6: Final answer
    x = 65,557.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.