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Finding the Third Proportional to 31,269 and 68,929

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Solution

The third proportional to 31,269 and 68,929 is: 151,946.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,269 : 68,929 = 68,929 : x
  2. Step 2: Convert to fraction form
    31,269/68,929 = 68,929/x
  3. Step 3: Cross multiply
    31,269x = 68,929 × 68,929
  4. Step 4: Simplify right side
    31,269x = 4,751,207,041
  5. Step 5: Solve for x
    x = 4,751,207,041/31,269
  6. Step 6: Final answer
    x = 151,946.24

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These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.