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Finding the Third Proportional to 33,981 and 51,720.75

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Solution

The third proportional to 33,981 and 51,720.75 is: 78,721.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,981 : 51,720.75 = 51,720.75 : x
  2. Step 2: Convert to fraction form
    33,981/51,720.75 = 51,720.75/x
  3. Step 3: Cross multiply
    33,981x = 51,720.75 × 51,720.75
  4. Step 4: Simplify right side
    33,981x = 2,675,035,980.56
  5. Step 5: Solve for x
    x = 2,675,035,980.56/33,981
  6. Step 6: Final answer
    x = 78,721.52

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.