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Finding the Fourth Proportional to 67,659.70, 101,489.55 and 20,926.90

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Solution

The fourth proportional to 67,659.70, 101,489.55 and 20,926.90 is: 31,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,659.70 : 101,489.55 = 20,926.90 : x
  2. Step 2: Convert to fraction form
    67,659.70/101,489.55 = 20,926.90/x
  3. Step 3: Cross multiply
    67,659.70x = 101,489.55 × 20,926.90
  4. Step 4: Simplify right side
    67,659.70x = 2,123,861,663.90
  5. Step 5: Solve for x
    x = 2,123,861,663.90/67,659.70
  6. Step 6: Final answer
    x = 31,390.35

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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.