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Finding the Fourth Proportional to 67,687.92, 101,544.84 and 20,932.56

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Solution

The fourth proportional to 67,687.92, 101,544.84 and 20,932.56 is: 31,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,687.92 : 101,544.84 = 20,932.56 : x
  2. Step 2: Convert to fraction form
    67,687.92/101,544.84 = 20,932.56/x
  3. Step 3: Cross multiply
    67,687.92x = 101,544.84 × 20,932.56
  4. Step 4: Simplify right side
    67,687.92x = 2,125,593,455.99
  5. Step 5: Solve for x
    x = 2,125,593,455.99/67,687.92
  6. Step 6: Final answer
    x = 31,402.85

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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.