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Finding the Fourth Proportional to 81,375.90, 122,063.83 and 22,213.14

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Solution

The fourth proportional to 81,375.90, 122,063.83 and 22,213.14 is: 33,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,375.90 : 122,063.83 = 22,213.14 : x
  2. Step 2: Convert to fraction form
    81,375.90/122,063.83 = 22,213.14/x
  3. Step 3: Cross multiply
    81,375.90x = 122,063.83 × 22,213.14
  4. Step 4: Simplify right side
    81,375.90x = 2,711,420,944.73
  5. Step 5: Solve for x
    x = 2,711,420,944.73/81,375.90
  6. Step 6: Final answer
    x = 33,319.70

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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.