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Finding the Fourth Proportional to 80,633.68, 120,991.44 and 36,251.44

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Solution

The fourth proportional to 80,633.68, 120,991.44 and 36,251.44 is: 54,395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,633.68 : 120,991.44 = 36,251.44 : x
  2. Step 2: Convert to fraction form
    80,633.68/120,991.44 = 36,251.44/x
  3. Step 3: Cross multiply
    80,633.68x = 120,991.44 × 36,251.44
  4. Step 4: Simplify right side
    80,633.68x = 4,386,113,927.67
  5. Step 5: Solve for x
    x = 4,386,113,927.67/80,633.68
  6. Step 6: Final answer
    x = 54,395.56

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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.