Home / 80,517.12-120,809.10-40,514.70

Finding the Fourth Proportional to 80,517.12, 120,809.10 and 40,514.70

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Solution

The fourth proportional to 80,517.12, 120,809.10 and 40,514.70 is: 60,788.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,517.12 : 120,809.10 = 40,514.70 : x
  2. Step 2: Convert to fraction form
    80,517.12/120,809.10 = 40,514.70/x
  3. Step 3: Cross multiply
    80,517.12x = 120,809.10 × 40,514.70
  4. Step 4: Simplify right side
    80,517.12x = 4,894,544,443.77
  5. Step 5: Solve for x
    x = 4,894,544,443.77/80,517.12
  6. Step 6: Final answer
    x = 60,788.87

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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.