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Finding the Fourth Proportional to 80,439.52, 120,660.90 and 38,324.44

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Solution

The fourth proportional to 80,439.52, 120,660.90 and 38,324.44 is: 57,487.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,439.52 : 120,660.90 = 38,324.44 : x
  2. Step 2: Convert to fraction form
    80,439.52/120,660.90 = 38,324.44/x
  3. Step 3: Cross multiply
    80,439.52x = 120,660.90 × 38,324.44
  4. Step 4: Simplify right side
    80,439.52x = 4,624,261,422.40
  5. Step 5: Solve for x
    x = 4,624,261,422.40/80,439.52
  6. Step 6: Final answer
    x = 57,487.43

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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.