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Finding the Fourth Proportional to 54,045, 81,067.86 and 17,109

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Solution

The fourth proportional to 54,045, 81,067.86 and 17,109 is: 25,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,045 : 81,067.86 = 17,109 : x
  2. Step 2: Convert to fraction form
    54,045/81,067.86 = 17,109/x
  3. Step 3: Cross multiply
    54,045x = 81,067.86 × 17,109
  4. Step 4: Simplify right side
    54,045x = 1,386,990,016.74
  5. Step 5: Solve for x
    x = 1,386,990,016.74/54,045
  6. Step 6: Final answer
    x = 25,663.61

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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.