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Finding the Third Proportional to 31,959 and 68,823.75

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Solution

The third proportional to 31,959 and 68,823.75 is: 148,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,959 : 68,823.75 = 68,823.75 : x
  2. Step 2: Convert to fraction form
    31,959/68,823.75 = 68,823.75/x
  3. Step 3: Cross multiply
    31,959x = 68,823.75 × 68,823.75
  4. Step 4: Simplify right side
    31,959x = 4,736,708,564.06
  5. Step 5: Solve for x
    x = 4,736,708,564.06/31,959
  6. Step 6: Final answer
    x = 148,212.04

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.