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Finding the Fourth Proportional to 33,147.72, 45,743.12 and 18,040.43

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Solution

The fourth proportional to 33,147.72, 45,743.12 and 18,040.43 is: 24,895.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,147.72 : 45,743.12 = 18,040.43 : x
  2. Step 2: Convert to fraction form
    33,147.72/45,743.12 = 18,040.43/x
  3. Step 3: Cross multiply
    33,147.72x = 45,743.12 × 18,040.43
  4. Step 4: Simplify right side
    33,147.72x = 825,225,235.42
  5. Step 5: Solve for x
    x = 825,225,235.42/33,147.72
  6. Step 6: Final answer
    x = 24,895.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.