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Finding the Third Proportional to 43,808 and 68,642

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Solution

The third proportional to 43,808 and 68,642 is: 107,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,808 : 68,642 = 68,642 : x
  2. Step 2: Convert to fraction form
    43,808/68,642 = 68,642/x
  3. Step 3: Cross multiply
    43,808x = 68,642 × 68,642
  4. Step 4: Simplify right side
    43,808x = 4,711,724,164
  5. Step 5: Solve for x
    x = 4,711,724,164/43,808
  6. Step 6: Final answer
    x = 107,553.97

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.