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Finding the Fourth Proportional to 54,251.82, 81,390.42 and 16,809.93

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Solution

The fourth proportional to 54,251.82, 81,390.42 and 16,809.93 is: 25,218.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,251.82 : 81,390.42 = 16,809.93 : x
  2. Step 2: Convert to fraction form
    54,251.82/81,390.42 = 16,809.93/x
  3. Step 3: Cross multiply
    54,251.82x = 81,390.42 × 16,809.93
  4. Step 4: Simplify right side
    54,251.82x = 1,368,167,262.87
  5. Step 5: Solve for x
    x = 1,368,167,262.87/54,251.82
  6. Step 6: Final answer
    x = 25,218.83

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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.