Home / 87,414.80-131,372.09-81,491.48

Finding the Fourth Proportional to 87,414.80, 131,372.09 and 81,491.48

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Solution

The fourth proportional to 87,414.80, 131,372.09 and 81,491.48 is: 122,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,414.80 : 131,372.09 = 81,491.48 : x
  2. Step 2: Convert to fraction form
    87,414.80/131,372.09 = 81,491.48/x
  3. Step 3: Cross multiply
    87,414.80x = 131,372.09 × 81,491.48
  4. Step 4: Simplify right side
    87,414.80x = 10,705,705,591.66
  5. Step 5: Solve for x
    x = 10,705,705,591.66/87,414.80
  6. Step 6: Final answer
    x = 122,470.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.