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Finding the Fourth Proportional to 67,165.35, 100,744.38 and 20,414.58

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Solution

The fourth proportional to 67,165.35, 100,744.38 and 20,414.58 is: 30,620.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,165.35 : 100,744.38 = 20,414.58 : x
  2. Step 2: Convert to fraction form
    67,165.35/100,744.38 = 20,414.58/x
  3. Step 3: Cross multiply
    67,165.35x = 100,744.38 × 20,414.58
  4. Step 4: Simplify right side
    67,165.35x = 2,056,653,902.16
  5. Step 5: Solve for x
    x = 2,056,653,902.16/67,165.35
  6. Step 6: Final answer
    x = 30,620.76

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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.