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Finding the Fourth Proportional to 80,573.92, 120,819.34 and 36,162.60

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Solution

The fourth proportional to 80,573.92, 120,819.34 and 36,162.60 is: 54,225.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,573.92 : 120,819.34 = 36,162.60 : x
  2. Step 2: Convert to fraction form
    80,573.92/120,819.34 = 36,162.60/x
  3. Step 3: Cross multiply
    80,573.92x = 120,819.34 × 36,162.60
  4. Step 4: Simplify right side
    80,573.92x = 4,369,141,464.68
  5. Step 5: Solve for x
    x = 4,369,141,464.68/80,573.92
  6. Step 6: Final answer
    x = 54,225.26

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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.