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Finding the Fourth Proportional to 80,272.85, 120,446.64 and 35,929.61

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Solution

The fourth proportional to 80,272.85, 120,446.64 and 35,929.61 is: 53,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,272.85 : 120,446.64 = 35,929.61 : x
  2. Step 2: Convert to fraction form
    80,272.85/120,446.64 = 35,929.61/x
  3. Step 3: Cross multiply
    80,272.85x = 120,446.64 × 35,929.61
  4. Step 4: Simplify right side
    80,272.85x = 4,327,600,801.01
  5. Step 5: Solve for x
    x = 4,327,600,801.01/80,272.85
  6. Step 6: Final answer
    x = 53,911.14

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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.