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Finding the Third Proportional to 38,376 and 78,653

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Solution

The third proportional to 38,376 and 78,653 is: 161,202.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,376 : 78,653 = 78,653 : x
  2. Step 2: Convert to fraction form
    38,376/78,653 = 78,653/x
  3. Step 3: Cross multiply
    38,376x = 78,653 × 78,653
  4. Step 4: Simplify right side
    38,376x = 6,186,294,409
  5. Step 5: Solve for x
    x = 6,186,294,409/38,376
  6. Step 6: Final answer
    x = 161,202.17

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.