Home / 80,486.22-120,729.92-30,552.86

Finding the Fourth Proportional to 80,486.22, 120,729.92 and 30,552.86

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Solution

The fourth proportional to 80,486.22, 120,729.92 and 30,552.86 is: 45,829.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,486.22 : 120,729.92 = 30,552.86 : x
  2. Step 2: Convert to fraction form
    80,486.22/120,729.92 = 30,552.86/x
  3. Step 3: Cross multiply
    80,486.22x = 120,729.92 × 30,552.86
  4. Step 4: Simplify right side
    80,486.22x = 3,688,644,343.57
  5. Step 5: Solve for x
    x = 3,688,644,343.57/80,486.22
  6. Step 6: Final answer
    x = 45,829.51

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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.