Home / 80,375.22-120,563.27-20,403.73

Finding the Fourth Proportional to 80,375.22, 120,563.27 and 20,403.73

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Solution

The fourth proportional to 80,375.22, 120,563.27 and 20,403.73 is: 30,605.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,375.22 : 120,563.27 = 20,403.73 : x
  2. Step 2: Convert to fraction form
    80,375.22/120,563.27 = 20,403.73/x
  3. Step 3: Cross multiply
    80,375.22x = 120,563.27 × 20,403.73
  4. Step 4: Simplify right side
    80,375.22x = 2,459,940,534.20
  5. Step 5: Solve for x
    x = 2,459,940,534.20/80,375.22
  6. Step 6: Final answer
    x = 30,605.71

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1.5x scale

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.