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Finding the Fourth Proportional to 54,472.52, 81,713.80 and 21,195.08

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Solution

The fourth proportional to 54,472.52, 81,713.80 and 21,195.08 is: 31,794.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,472.52 : 81,713.80 = 21,195.08 : x
  2. Step 2: Convert to fraction form
    54,472.52/81,713.80 = 21,195.08/x
  3. Step 3: Cross multiply
    54,472.52x = 81,713.80 × 21,195.08
  4. Step 4: Simplify right side
    54,472.52x = 1,731,930,528.10
  5. Step 5: Solve for x
    x = 1,731,930,528.10/54,472.52
  6. Step 6: Final answer
    x = 31,794.57

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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.