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Finding the Third Proportional to 81,679 and 175,021.75

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Solution

The third proportional to 81,679 and 175,021.75 is: 375,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679 : 175,021.75 = 175,021.75 : x
  2. Step 2: Convert to fraction form
    81,679/175,021.75 = 175,021.75/x
  3. Step 3: Cross multiply
    81,679x = 175,021.75 × 175,021.75
  4. Step 4: Simplify right side
    81,679x = 30,632,612,973.06
  5. Step 5: Solve for x
    x = 30,632,612,973.06/81,679
  6. Step 6: Final answer
    x = 375,036.58

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.