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Finding the Third Proportional to 36,491 and 78,979

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Solution

The third proportional to 36,491 and 78,979 is: 170,937.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,491 : 78,979 = 78,979 : x
  2. Step 2: Convert to fraction form
    36,491/78,979 = 78,979/x
  3. Step 3: Cross multiply
    36,491x = 78,979 × 78,979
  4. Step 4: Simplify right side
    36,491x = 6,237,682,441
  5. Step 5: Solve for x
    x = 6,237,682,441/36,491
  6. Step 6: Final answer
    x = 170,937.56

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.