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Finding the Fourth Proportional to 89,607.90, 123,657.92 and 49,320.79

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Solution

The fourth proportional to 89,607.90, 123,657.92 and 49,320.79 is: 68,062.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,607.90 : 123,657.92 = 49,320.79 : x
  2. Step 2: Convert to fraction form
    89,607.90/123,657.92 = 49,320.79/x
  3. Step 3: Cross multiply
    89,607.90x = 123,657.92 × 49,320.79
  4. Step 4: Simplify right side
    89,607.90x = 6,098,906,428.35
  5. Step 5: Solve for x
    x = 6,098,906,428.35/89,607.90
  6. Step 6: Final answer
    x = 68,062.15

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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.