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Finding the Fourth Proportional to 54,009.27, 81,019.31 and 22,412.79

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Solution

The fourth proportional to 54,009.27, 81,019.31 and 22,412.79 is: 33,621.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,009.27 : 81,019.31 = 22,412.79 : x
  2. Step 2: Convert to fraction form
    54,009.27/81,019.31 = 22,412.79/x
  3. Step 3: Cross multiply
    54,009.27x = 81,019.31 × 22,412.79
  4. Step 4: Simplify right side
    54,009.27x = 1,815,868,668.91
  5. Step 5: Solve for x
    x = 1,815,868,668.91/54,009.27
  6. Step 6: Final answer
    x = 33,621.43

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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.