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Finding the Third Proportional to 40,220 and 57,718

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Solution

The third proportional to 40,220 and 57,718 is: 82,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,220 : 57,718 = 57,718 : x
  2. Step 2: Convert to fraction form
    40,220/57,718 = 57,718/x
  3. Step 3: Cross multiply
    40,220x = 57,718 × 57,718
  4. Step 4: Simplify right side
    40,220x = 3,331,367,524
  5. Step 5: Solve for x
    x = 3,331,367,524/40,220
  6. Step 6: Final answer
    x = 82,828.63

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.