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Finding the Fourth Proportional to 80,108.65, 120,171.12 and 27,511.30

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Solution

The fourth proportional to 80,108.65, 120,171.12 and 27,511.30 is: 41,269.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,108.65 : 120,171.12 = 27,511.30 : x
  2. Step 2: Convert to fraction form
    80,108.65/120,171.12 = 27,511.30/x
  3. Step 3: Cross multiply
    80,108.65x = 120,171.12 × 27,511.30
  4. Step 4: Simplify right side
    80,108.65x = 3,306,063,733.66
  5. Step 5: Solve for x
    x = 3,306,063,733.66/80,108.65
  6. Step 6: Final answer
    x = 41,269.75

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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.