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Finding the Fourth Proportional to 73,169.91, 100,974.27 and 39,635.91

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Solution

The fourth proportional to 73,169.91, 100,974.27 and 39,635.91 is: 54,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,169.91 : 100,974.27 = 39,635.91 : x
  2. Step 2: Convert to fraction form
    73,169.91/100,974.27 = 39,635.91/x
  3. Step 3: Cross multiply
    73,169.91x = 100,974.27 × 39,635.91
  4. Step 4: Simplify right side
    73,169.91x = 4,002,207,078.04
  5. Step 5: Solve for x
    x = 4,002,207,078.04/73,169.91
  6. Step 6: Final answer
    x = 54,697.44

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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.