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Finding the Fourth Proportional to 54,363.72, 81,551.17 and 18,824.97

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Solution

The fourth proportional to 54,363.72, 81,551.17 and 18,824.97 is: 28,239.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,363.72 : 81,551.17 = 18,824.97 : x
  2. Step 2: Convert to fraction form
    54,363.72/81,551.17 = 18,824.97/x
  3. Step 3: Cross multiply
    54,363.72x = 81,551.17 × 18,824.97
  4. Step 4: Simplify right side
    54,363.72x = 1,535,197,969.98
  5. Step 5: Solve for x
    x = 1,535,197,969.98/54,363.72
  6. Step 6: Final answer
    x = 28,239.39

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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.