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Finding the Fourth Proportional to 87,463.62, 120,700.53 and 49,221.90

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Solution

The fourth proportional to 87,463.62, 120,700.53 and 49,221.90 is: 67,926.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,463.62 : 120,700.53 = 49,221.90 : x
  2. Step 2: Convert to fraction form
    87,463.62/120,700.53 = 49,221.90/x
  3. Step 3: Cross multiply
    87,463.62x = 120,700.53 × 49,221.90
  4. Step 4: Simplify right side
    87,463.62x = 5,941,109,417.61
  5. Step 5: Solve for x
    x = 5,941,109,417.61/87,463.62
  6. Step 6: Final answer
    x = 67,926.64

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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.