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Finding the Fourth Proportional to 89,805.17, 123,932.05 and 49,517.91

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Solution

The fourth proportional to 89,805.17, 123,932.05 and 49,517.91 is: 68,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,805.17 : 123,932.05 = 49,517.91 : x
  2. Step 2: Convert to fraction form
    89,805.17/123,932.05 = 49,517.91/x
  3. Step 3: Cross multiply
    89,805.17x = 123,932.05 × 49,517.91
  4. Step 4: Simplify right side
    89,805.17x = 6,136,855,974.22
  5. Step 5: Solve for x
    x = 6,136,855,974.22/89,805.17
  6. Step 6: Final answer
    x = 68,335.22

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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.