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Finding the Fourth Proportional to 80,393.76, 120,552.30 and 36,020.88

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Solution

The fourth proportional to 80,393.76, 120,552.30 and 36,020.88 is: 54,014.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,393.76 : 120,552.30 = 36,020.88 : x
  2. Step 2: Convert to fraction form
    80,393.76/120,552.30 = 36,020.88/x
  3. Step 3: Cross multiply
    80,393.76x = 120,552.30 × 36,020.88
  4. Step 4: Simplify right side
    80,393.76x = 4,342,399,932.02
  5. Step 5: Solve for x
    x = 4,342,399,932.02/80,393.76
  6. Step 6: Final answer
    x = 54,014.14

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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.