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Finding the Third Proportional to 37,690 and 82,220

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Solution

The third proportional to 37,690 and 82,220 is: 179,361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,690 : 82,220 = 82,220 : x
  2. Step 2: Convert to fraction form
    37,690/82,220 = 82,220/x
  3. Step 3: Cross multiply
    37,690x = 82,220 × 82,220
  4. Step 4: Simplify right side
    37,690x = 6,760,128,400
  5. Step 5: Solve for x
    x = 6,760,128,400/37,690
  6. Step 6: Final answer
    x = 179,361.33

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.