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Finding the Fourth Proportional to 80,331.48, 120,483.45 and 21,167.64

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Solution

The fourth proportional to 80,331.48, 120,483.45 and 21,167.64 is: 31,747.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,331.48 : 120,483.45 = 21,167.64 : x
  2. Step 2: Convert to fraction form
    80,331.48/120,483.45 = 21,167.64/x
  3. Step 3: Cross multiply
    80,331.48x = 120,483.45 × 21,167.64
  4. Step 4: Simplify right side
    80,331.48x = 2,550,350,295.56
  5. Step 5: Solve for x
    x = 2,550,350,295.56/80,331.48
  6. Step 6: Final answer
    x = 31,747.83

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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.