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Finding the Fourth Proportional to 80,569.60, 120,854.40 and 43,244.80

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Solution

The fourth proportional to 80,569.60, 120,854.40 and 43,244.80 is: 64,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,569.60 : 120,854.40 = 43,244.80 : x
  2. Step 2: Convert to fraction form
    80,569.60/120,854.40 = 43,244.80/x
  3. Step 3: Cross multiply
    80,569.60x = 120,854.40 × 43,244.80
  4. Step 4: Simplify right side
    80,569.60x = 5,226,324,357.12
  5. Step 5: Solve for x
    x = 5,226,324,357.12/80,569.60
  6. Step 6: Final answer
    x = 64,867.20

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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.