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Finding the Fourth Proportional to 54,418.52, 81,578.49 and 19,349.97

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Solution

The fourth proportional to 54,418.52, 81,578.49 and 19,349.97 is: 29,007.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,418.52 : 81,578.49 = 19,349.97 : x
  2. Step 2: Convert to fraction form
    54,418.52/81,578.49 = 19,349.97/x
  3. Step 3: Cross multiply
    54,418.52x = 81,578.49 × 19,349.97
  4. Step 4: Simplify right side
    54,418.52x = 1,578,541,334.15
  5. Step 5: Solve for x
    x = 1,578,541,334.15/54,418.52
  6. Step 6: Final answer
    x = 29,007.43

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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.