Home / 80,481.18-120,743.24-27,890.62

Finding the Fourth Proportional to 80,481.18, 120,743.24 and 27,890.62

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Solution

The fourth proportional to 80,481.18, 120,743.24 and 27,890.62 is: 41,843.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,481.18 : 120,743.24 = 27,890.62 : x
  2. Step 2: Convert to fraction form
    80,481.18/120,743.24 = 27,890.62/x
  3. Step 3: Cross multiply
    80,481.18x = 120,743.24 × 27,890.62
  4. Step 4: Simplify right side
    80,481.18x = 3,367,603,824.41
  5. Step 5: Solve for x
    x = 3,367,603,824.41/80,481.18
  6. Step 6: Final answer
    x = 41,843.37

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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.