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Finding the Third Proportional to 37,420 and 81,887

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Solution

The third proportional to 37,420 and 81,887 is: 179,195.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,420 : 81,887 = 81,887 : x
  2. Step 2: Convert to fraction form
    37,420/81,887 = 81,887/x
  3. Step 3: Cross multiply
    37,420x = 81,887 × 81,887
  4. Step 4: Simplify right side
    37,420x = 6,705,480,769
  5. Step 5: Solve for x
    x = 6,705,480,769/37,420
  6. Step 6: Final answer
    x = 179,195.10

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.