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Finding the Fourth Proportional to 80,635.07, 120,978.11 and 36,265.70

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Solution

The fourth proportional to 80,635.07, 120,978.11 and 36,265.70 is: 54,410.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,635.07 : 120,978.11 = 36,265.70 : x
  2. Step 2: Convert to fraction form
    80,635.07/120,978.11 = 36,265.70/x
  3. Step 3: Cross multiply
    80,635.07x = 120,978.11 × 36,265.70
  4. Step 4: Simplify right side
    80,635.07x = 4,387,355,843.83
  5. Step 5: Solve for x
    x = 4,387,355,843.83/80,635.07
  6. Step 6: Final answer
    x = 54,410.02

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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.