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Finding the Fourth Proportional to 54,885.33, 82,271.49 and 21,591.90

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Solution

The fourth proportional to 54,885.33, 82,271.49 and 21,591.90 is: 32,365.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,885.33 : 82,271.49 = 21,591.90 : x
  2. Step 2: Convert to fraction form
    54,885.33/82,271.49 = 21,591.90/x
  3. Step 3: Cross multiply
    54,885.33x = 82,271.49 × 21,591.90
  4. Step 4: Simplify right side
    54,885.33x = 1,776,397,784.93
  5. Step 5: Solve for x
    x = 1,776,397,784.93/54,885.33
  6. Step 6: Final answer
    x = 32,365.62

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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.