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Finding the Fourth Proportional to 54,358.69, 81,545.72 and 16,922.54

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Solution

The fourth proportional to 54,358.69, 81,545.72 and 16,922.54 is: 25,386.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,358.69 : 81,545.72 = 16,922.54 : x
  2. Step 2: Convert to fraction form
    54,358.69/81,545.72 = 16,922.54/x
  3. Step 3: Cross multiply
    54,358.69x = 81,545.72 × 16,922.54
  4. Step 4: Simplify right side
    54,358.69x = 1,379,960,922.97
  5. Step 5: Solve for x
    x = 1,379,960,922.97/54,358.69
  6. Step 6: Final answer
    x = 25,386.21

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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.