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Finding the Fourth Proportional to 80,388.73, 120,600.37 and 27,086

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Solution

The fourth proportional to 80,388.73, 120,600.37 and 27,086 is: 40,634.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,388.73 : 120,600.37 = 27,086 : x
  2. Step 2: Convert to fraction form
    80,388.73/120,600.37 = 27,086/x
  3. Step 3: Cross multiply
    80,388.73x = 120,600.37 × 27,086
  4. Step 4: Simplify right side
    80,388.73x = 3,266,581,621.82
  5. Step 5: Solve for x
    x = 3,266,581,621.82/80,388.73
  6. Step 6: Final answer
    x = 40,634.82

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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.