Home / 80,526.20-120,811.19-27,939.78

Finding the Fourth Proportional to 80,526.20, 120,811.19 and 27,939.78

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Solution

The fourth proportional to 80,526.20, 120,811.19 and 27,939.78 is: 41,917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,526.20 : 120,811.19 = 27,939.78 : x
  2. Step 2: Convert to fraction form
    80,526.20/120,811.19 = 27,939.78/x
  3. Step 3: Cross multiply
    80,526.20x = 120,811.19 × 27,939.78
  4. Step 4: Simplify right side
    80,526.20x = 3,375,437,930.44
  5. Step 5: Solve for x
    x = 3,375,437,930.44/80,526.20
  6. Step 6: Final answer
    x = 41,917.27

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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.