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Finding the Fourth Proportional to 67,000.28, 100,369.02 and 38,861.20

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Solution

The fourth proportional to 67,000.28, 100,369.02 and 38,861.20 is: 58,215.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,000.28 : 100,369.02 = 38,861.20 : x
  2. Step 2: Convert to fraction form
    67,000.28/100,369.02 = 38,861.20/x
  3. Step 3: Cross multiply
    67,000.28x = 100,369.02 × 38,861.20
  4. Step 4: Simplify right side
    67,000.28x = 3,900,460,560.02
  5. Step 5: Solve for x
    x = 3,900,460,560.02/67,000.28
  6. Step 6: Final answer
    x = 58,215.59

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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.