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Finding the Fourth Proportional to 80,166.40, 120,019.20 and 49,062.40

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Solution

The fourth proportional to 80,166.40, 120,019.20 and 49,062.40 is: 73,452.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,166.40 : 120,019.20 = 49,062.40 : x
  2. Step 2: Convert to fraction form
    80,166.40/120,019.20 = 49,062.40/x
  3. Step 3: Cross multiply
    80,166.40x = 120,019.20 × 49,062.40
  4. Step 4: Simplify right side
    80,166.40x = 5,888,429,998.08
  5. Step 5: Solve for x
    x = 5,888,429,998.08/80,166.40
  6. Step 6: Final answer
    x = 73,452.59

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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.