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Finding the Third Proportional to 66,760 and 103,972

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Solution

The third proportional to 66,760 and 103,972 is: 161,925.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,760 : 103,972 = 103,972 : x
  2. Step 2: Convert to fraction form
    66,760/103,972 = 103,972/x
  3. Step 3: Cross multiply
    66,760x = 103,972 × 103,972
  4. Step 4: Simplify right side
    66,760x = 10,810,176,784
  5. Step 5: Solve for x
    x = 10,810,176,784/66,760
  6. Step 6: Final answer
    x = 161,925.96

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.