Home / 80,588.31-120,882.25-21,423.95

Finding the Fourth Proportional to 80,588.31, 120,882.25 and 21,423.95

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Solution

The fourth proportional to 80,588.31, 120,882.25 and 21,423.95 is: 32,135.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,588.31 : 120,882.25 = 21,423.95 : x
  2. Step 2: Convert to fraction form
    80,588.31/120,882.25 = 21,423.95/x
  3. Step 3: Cross multiply
    80,588.31x = 120,882.25 × 21,423.95
  4. Step 4: Simplify right side
    80,588.31x = 2,589,775,279.89
  5. Step 5: Solve for x
    x = 2,589,775,279.89/80,588.31
  6. Step 6: Final answer
    x = 32,135.87

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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.