Home / 87,387.20-131,081.52-54,203.84

Finding the Fourth Proportional to 87,387.20, 131,081.52 and 54,203.84

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Solution

The fourth proportional to 87,387.20, 131,081.52 and 54,203.84 is: 81,306.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,387.20 : 131,081.52 = 54,203.84 : x
  2. Step 2: Convert to fraction form
    87,387.20/131,081.52 = 54,203.84/x
  3. Step 3: Cross multiply
    87,387.20x = 131,081.52 × 54,203.84
  4. Step 4: Simplify right side
    87,387.20x = 7,105,121,737.04
  5. Step 5: Solve for x
    x = 7,105,121,737.04/87,387.20
  6. Step 6: Final answer
    x = 81,306.21

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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.