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Finding the Fourth Proportional to 89,734, 123,717.90 and 73,541.70

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Solution

The fourth proportional to 89,734, 123,717.90 and 73,541.70 is: 101,393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,734 : 123,717.90 = 73,541.70 : x
  2. Step 2: Convert to fraction form
    89,734/123,717.90 = 73,541.70/x
  3. Step 3: Cross multiply
    89,734x = 123,717.90 × 73,541.70
  4. Step 4: Simplify right side
    89,734x = 9,098,424,686.43
  5. Step 5: Solve for x
    x = 9,098,424,686.43/89,734
  6. Step 6: Final answer
    x = 101,393.28

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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.