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Finding the Third Proportional to 65,907 and 80,811

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Solution

The third proportional to 65,907 and 80,811 is: 99,085.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,907 : 80,811 = 80,811 : x
  2. Step 2: Convert to fraction form
    65,907/80,811 = 80,811/x
  3. Step 3: Cross multiply
    65,907x = 80,811 × 80,811
  4. Step 4: Simplify right side
    65,907x = 6,530,417,721
  5. Step 5: Solve for x
    x = 6,530,417,721/65,907
  6. Step 6: Final answer
    x = 99,085.34

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Why These Related Problems?

These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.