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Finding the Fourth Proportional to 91,781.62, 137,672.43 and 32,619.62

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Solution

The fourth proportional to 91,781.62, 137,672.43 and 32,619.62 is: 48,929.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,781.62 : 137,672.43 = 32,619.62 : x
  2. Step 2: Convert to fraction form
    91,781.62/137,672.43 = 32,619.62/x
  3. Step 3: Cross multiply
    91,781.62x = 137,672.43 × 32,619.62
  4. Step 4: Simplify right side
    91,781.62x = 4,490,822,572.93
  5. Step 5: Solve for x
    x = 4,490,822,572.93/91,781.62
  6. Step 6: Final answer
    x = 48,929.43

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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.