Home / 80,311.68-120,474.24-27,721.60

Finding the Fourth Proportional to 80,311.68, 120,474.24 and 27,721.60

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Solution

The fourth proportional to 80,311.68, 120,474.24 and 27,721.60 is: 41,584.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,311.68 : 120,474.24 = 27,721.60 : x
  2. Step 2: Convert to fraction form
    80,311.68/120,474.24 = 27,721.60/x
  3. Step 3: Cross multiply
    80,311.68x = 120,474.24 × 27,721.60
  4. Step 4: Simplify right side
    80,311.68x = 3,339,738,691.58
  5. Step 5: Solve for x
    x = 3,339,738,691.58/80,311.68
  6. Step 6: Final answer
    x = 41,584.72

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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.