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Finding the Fourth Proportional to 67,652.73, 101,488.82 and 20,909.25

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Solution

The fourth proportional to 67,652.73, 101,488.82 and 20,909.25 is: 31,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,652.73 : 101,488.82 = 20,909.25 : x
  2. Step 2: Convert to fraction form
    67,652.73/101,488.82 = 20,909.25/x
  3. Step 3: Cross multiply
    67,652.73x = 101,488.82 × 20,909.25
  4. Step 4: Simplify right side
    67,652.73x = 2,122,055,005.04
  5. Step 5: Solve for x
    x = 2,122,055,005.04/67,652.73
  6. Step 6: Final answer
    x = 31,366.88

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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.