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Finding the Fourth Proportional to 48,425.18, 72,642.49 and 18,845.42

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Solution

The fourth proportional to 48,425.18, 72,642.49 and 18,845.42 is: 28,269.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,425.18 : 72,642.49 = 18,845.42 : x
  2. Step 2: Convert to fraction form
    48,425.18/72,642.49 = 18,845.42/x
  3. Step 3: Cross multiply
    48,425.18x = 72,642.49 × 18,845.42
  4. Step 4: Simplify right side
    48,425.18x = 1,368,978,233.90
  5. Step 5: Solve for x
    x = 1,368,978,233.90/48,425.18
  6. Step 6: Final answer
    x = 28,269.97

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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.