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Finding the Third Proportional to 65,871 and 99,387

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Solution

The third proportional to 65,871 and 99,387 is: 149,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,871 : 99,387 = 99,387 : x
  2. Step 2: Convert to fraction form
    65,871/99,387 = 99,387/x
  3. Step 3: Cross multiply
    65,871x = 99,387 × 99,387
  4. Step 4: Simplify right side
    65,871x = 9,877,775,769
  5. Step 5: Solve for x
    x = 9,877,775,769/65,871
  6. Step 6: Final answer
    x = 149,956.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.