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Finding the Fourth Proportional to 54,979.80, 82,404.90 and 41,112.60

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Solution

The fourth proportional to 54,979.80, 82,404.90 and 41,112.60 is: 61,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,979.80 : 82,404.90 = 41,112.60 : x
  2. Step 2: Convert to fraction form
    54,979.80/82,404.90 = 41,112.60/x
  3. Step 3: Cross multiply
    54,979.80x = 82,404.90 × 41,112.60
  4. Step 4: Simplify right side
    54,979.80x = 3,387,879,691.74
  5. Step 5: Solve for x
    x = 3,387,879,691.74/54,979.80
  6. Step 6: Final answer
    x = 61,620.44

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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.