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Finding the Fourth Proportional to 80,634.82, 120,910.56 and 36,223.60

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Solution

The fourth proportional to 80,634.82, 120,910.56 and 36,223.60 is: 54,316.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,634.82 : 120,910.56 = 36,223.60 : x
  2. Step 2: Convert to fraction form
    80,634.82/120,910.56 = 36,223.60/x
  3. Step 3: Cross multiply
    80,634.82x = 120,910.56 × 36,223.60
  4. Step 4: Simplify right side
    80,634.82x = 4,379,815,761.22
  5. Step 5: Solve for x
    x = 4,379,815,761.22/80,634.82
  6. Step 6: Final answer
    x = 54,316.68

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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.