Home / 80,376.43-120,540.03-55,575.85

Finding the Fourth Proportional to 80,376.43, 120,540.03 and 55,575.85

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Solution

The fourth proportional to 80,376.43, 120,540.03 and 55,575.85 is: 83,346.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,376.43 : 120,540.03 = 55,575.85 : x
  2. Step 2: Convert to fraction form
    80,376.43/120,540.03 = 55,575.85/x
  3. Step 3: Cross multiply
    80,376.43x = 120,540.03 × 55,575.85
  4. Step 4: Simplify right side
    80,376.43x = 6,699,114,348.40
  5. Step 5: Solve for x
    x = 6,699,114,348.40/80,376.43
  6. Step 6: Final answer
    x = 83,346.75

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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.