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Finding the Third Proportional to 31,550 and 66,996

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Solution

The third proportional to 31,550 and 66,996 is: 142,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,550 : 66,996 = 66,996 : x
  2. Step 2: Convert to fraction form
    31,550/66,996 = 66,996/x
  3. Step 3: Cross multiply
    31,550x = 66,996 × 66,996
  4. Step 4: Simplify right side
    31,550x = 4,488,464,016
  5. Step 5: Solve for x
    x = 4,488,464,016/31,550
  6. Step 6: Final answer
    x = 142,265.10

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.