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Finding the Third Proportional to 39,980.25 and 81,335.25

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Solution

The third proportional to 39,980.25 and 81,335.25 is: 165,467.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.25 : 81,335.25 = 81,335.25 : x
  2. Step 2: Convert to fraction form
    39,980.25/81,335.25 = 81,335.25/x
  3. Step 3: Cross multiply
    39,980.25x = 81,335.25 × 81,335.25
  4. Step 4: Simplify right side
    39,980.25x = 6,615,422,892.56
  5. Step 5: Solve for x
    x = 6,615,422,892.56/39,980.25
  6. Step 6: Final answer
    x = 165,467.27

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.