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Finding the Fourth Proportional to 54,535.40, 81,806.52 and 21,244.40

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Solution

The fourth proportional to 54,535.40, 81,806.52 and 21,244.40 is: 31,867.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,535.40 : 81,806.52 = 21,244.40 : x
  2. Step 2: Convert to fraction form
    54,535.40/81,806.52 = 21,244.40/x
  3. Step 3: Cross multiply
    54,535.40x = 81,806.52 × 21,244.40
  4. Step 4: Simplify right side
    54,535.40x = 1,737,930,433.49
  5. Step 5: Solve for x
    x = 1,737,930,433.49/54,535.40
  6. Step 6: Final answer
    x = 31,867.93

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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.