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Finding the Third Proportional to 70,979 and 98,691

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Solution

The third proportional to 70,979 and 98,691 is: 137,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,979 : 98,691 = 98,691 : x
  2. Step 2: Convert to fraction form
    70,979/98,691 = 98,691/x
  3. Step 3: Cross multiply
    70,979x = 98,691 × 98,691
  4. Step 4: Simplify right side
    70,979x = 9,739,913,481
  5. Step 5: Solve for x
    x = 9,739,913,481/70,979
  6. Step 6: Final answer
    x = 137,222.47

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.