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Finding the Fourth Proportional to 80,479.56, 120,690.18 and 36,083.46

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Solution

The fourth proportional to 80,479.56, 120,690.18 and 36,083.46 is: 54,112.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,479.56 : 120,690.18 = 36,083.46 : x
  2. Step 2: Convert to fraction form
    80,479.56/120,690.18 = 36,083.46/x
  3. Step 3: Cross multiply
    80,479.56x = 120,690.18 × 36,083.46
  4. Step 4: Simplify right side
    80,479.56x = 4,354,919,282.42
  5. Step 5: Solve for x
    x = 4,354,919,282.42/80,479.56
  6. Step 6: Final answer
    x = 54,112.12

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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.