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Finding the Third Proportional to 27,979.31 and 43,387.31

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Solution

The third proportional to 27,979.31 and 43,387.31 is: 67,280.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.31 : 43,387.31 = 43,387.31 : x
  2. Step 2: Convert to fraction form
    27,979.31/43,387.31 = 43,387.31/x
  3. Step 3: Cross multiply
    27,979.31x = 43,387.31 × 43,387.31
  4. Step 4: Simplify right side
    27,979.31x = 1,882,458,885.97
  5. Step 5: Solve for x
    x = 1,882,458,885.97/27,979.31
  6. Step 6: Final answer
    x = 67,280.38

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.