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Finding the Fourth Proportional to 73,168.92, 109,747.89 and 26,421.78

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Solution

The fourth proportional to 73,168.92, 109,747.89 and 26,421.78 is: 39,630.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,168.92 : 109,747.89 = 26,421.78 : x
  2. Step 2: Convert to fraction form
    73,168.92/109,747.89 = 26,421.78/x
  3. Step 3: Cross multiply
    73,168.92x = 109,747.89 × 26,421.78
  4. Step 4: Simplify right side
    73,168.92x = 2,899,734,605.04
  5. Step 5: Solve for x
    x = 2,899,734,605.04/73,168.92
  6. Step 6: Final answer
    x = 39,630.69

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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.