Home / 80,046.22-120,131.31-30,171.69

Finding the Fourth Proportional to 80,046.22, 120,131.31 and 30,171.69

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Solution

The fourth proportional to 80,046.22, 120,131.31 and 30,171.69 is: 45,280.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,046.22 : 120,131.31 = 30,171.69 : x
  2. Step 2: Convert to fraction form
    80,046.22/120,131.31 = 30,171.69/x
  3. Step 3: Cross multiply
    80,046.22x = 120,131.31 × 30,171.69
  4. Step 4: Simplify right side
    80,046.22x = 3,624,564,644.61
  5. Step 5: Solve for x
    x = 3,624,564,644.61/80,046.22
  6. Step 6: Final answer
    x = 45,280.90

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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.