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Finding the Third Proportional to 71,988.75 and 81,010.13

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Solution

The third proportional to 71,988.75 and 81,010.13 is: 91,162.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,988.75 : 81,010.13 = 81,010.13 : x
  2. Step 2: Convert to fraction form
    71,988.75/81,010.13 = 81,010.13/x
  3. Step 3: Cross multiply
    71,988.75x = 81,010.13 × 81,010.13
  4. Step 4: Simplify right side
    71,988.75x = 6,562,640,352.52
  5. Step 5: Solve for x
    x = 6,562,640,352.52/71,988.75
  6. Step 6: Final answer
    x = 91,162.03

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.