Home / 80,250.38-120,330.54-54,978.44

Finding the Fourth Proportional to 80,250.38, 120,330.54 and 54,978.44

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Solution

The fourth proportional to 80,250.38, 120,330.54 and 54,978.44 is: 82,436.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,250.38 : 120,330.54 = 54,978.44 : x
  2. Step 2: Convert to fraction form
    80,250.38/120,330.54 = 54,978.44/x
  3. Step 3: Cross multiply
    80,250.38x = 120,330.54 × 54,978.44
  4. Step 4: Simplify right side
    80,250.38x = 6,615,584,771.90
  5. Step 5: Solve for x
    x = 6,615,584,771.90/80,250.38
  6. Step 6: Final answer
    x = 82,436.81

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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.