Home / 80,286.18-120,363.48-30,337.86

Finding the Fourth Proportional to 80,286.18, 120,363.48 and 30,337.86

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Solution

The fourth proportional to 80,286.18, 120,363.48 and 30,337.86 is: 45,481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,286.18 : 120,363.48 = 30,337.86 : x
  2. Step 2: Convert to fraction form
    80,286.18/120,363.48 = 30,337.86/x
  3. Step 3: Cross multiply
    80,286.18x = 120,363.48 × 30,337.86
  4. Step 4: Simplify right side
    80,286.18x = 3,651,570,405.35
  5. Step 5: Solve for x
    x = 3,651,570,405.35/80,286.18
  6. Step 6: Final answer
    x = 45,481.93

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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.