Home / 80,404.52-120,608.60-30,508.11

Finding the Fourth Proportional to 80,404.52, 120,608.60 and 30,508.11

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Solution

The fourth proportional to 80,404.52, 120,608.60 and 30,508.11 is: 45,762.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,404.52 : 120,608.60 = 30,508.11 : x
  2. Step 2: Convert to fraction form
    80,404.52/120,608.60 = 30,508.11/x
  3. Step 3: Cross multiply
    80,404.52x = 120,608.60 × 30,508.11
  4. Step 4: Simplify right side
    80,404.52x = 3,679,540,283.21
  5. Step 5: Solve for x
    x = 3,679,540,283.21/80,404.52
  6. Step 6: Final answer
    x = 45,762.86

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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.