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Finding the Fourth Proportional to 67,337.87, 100,997.09 and 20,578.19

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Solution

The fourth proportional to 67,337.87, 100,997.09 and 20,578.19 is: 30,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,337.87 : 100,997.09 = 20,578.19 : x
  2. Step 2: Convert to fraction form
    67,337.87/100,997.09 = 20,578.19/x
  3. Step 3: Cross multiply
    67,337.87x = 100,997.09 × 20,578.19
  4. Step 4: Simplify right side
    67,337.87x = 2,078,337,204.58
  5. Step 5: Solve for x
    x = 2,078,337,204.58/67,337.87
  6. Step 6: Final answer
    x = 30,864.31

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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.