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Finding the Fourth Proportional to 91,573.86, 137,249.88 and 38,872.68

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Solution

The fourth proportional to 91,573.86, 137,249.88 and 38,872.68 is: 58,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,573.86 : 137,249.88 = 38,872.68 : x
  2. Step 2: Convert to fraction form
    91,573.86/137,249.88 = 38,872.68/x
  3. Step 3: Cross multiply
    91,573.86x = 137,249.88 × 38,872.68
  4. Step 4: Simplify right side
    91,573.86x = 5,335,270,665.28
  5. Step 5: Solve for x
    x = 5,335,270,665.28/91,573.86
  6. Step 6: Final answer
    x = 58,261.94

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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.