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Finding the Fourth Proportional to 73,976.80, 111,034.80 and 38,941.60

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Solution

The fourth proportional to 73,976.80, 111,034.80 and 38,941.60 is: 58,449.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,976.80 : 111,034.80 = 38,941.60 : x
  2. Step 2: Convert to fraction form
    73,976.80/111,034.80 = 38,941.60/x
  3. Step 3: Cross multiply
    73,976.80x = 111,034.80 × 38,941.60
  4. Step 4: Simplify right side
    73,976.80x = 4,323,872,767.68
  5. Step 5: Solve for x
    x = 4,323,872,767.68/73,976.80
  6. Step 6: Final answer
    x = 58,449.04

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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.