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Finding the Fourth Proportional to 67,658.82, 101,500.92 and 20,900.76

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Solution

The fourth proportional to 67,658.82, 101,500.92 and 20,900.76 is: 31,355.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,658.82 : 101,500.92 = 20,900.76 : x
  2. Step 2: Convert to fraction form
    67,658.82/101,500.92 = 20,900.76/x
  3. Step 3: Cross multiply
    67,658.82x = 101,500.92 × 20,900.76
  4. Step 4: Simplify right side
    67,658.82x = 2,121,446,368.70
  5. Step 5: Solve for x
    x = 2,121,446,368.70/67,658.82
  6. Step 6: Final answer
    x = 31,355.06

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1.5x scale

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.