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Finding the Fourth Proportional to 80,635.50, 120,996.99 and 39,082.50

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Solution

The fourth proportional to 80,635.50, 120,996.99 and 39,082.50 is: 58,644.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,635.50 : 120,996.99 = 39,082.50 : x
  2. Step 2: Convert to fraction form
    80,635.50/120,996.99 = 39,082.50/x
  3. Step 3: Cross multiply
    80,635.50x = 120,996.99 × 39,082.50
  4. Step 4: Simplify right side
    80,635.50x = 4,728,864,861.68
  5. Step 5: Solve for x
    x = 4,728,864,861.68/80,635.50
  6. Step 6: Final answer
    x = 58,644.95

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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.