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Finding the Fourth Proportional to 54,672.57, 81,922.59 and 39,813.12

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Solution

The fourth proportional to 54,672.57, 81,922.59 and 39,813.12 is: 59,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,672.57 : 81,922.59 = 39,813.12 : x
  2. Step 2: Convert to fraction form
    54,672.57/81,922.59 = 39,813.12/x
  3. Step 3: Cross multiply
    54,672.57x = 81,922.59 × 39,813.12
  4. Step 4: Simplify right side
    54,672.57x = 3,261,593,906.38
  5. Step 5: Solve for x
    x = 3,261,593,906.38/54,672.57
  6. Step 6: Final answer
    x = 59,656.86

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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.