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Finding the Third Proportional to 18,392 and 40,624

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Solution

The third proportional to 18,392 and 40,624 is: 89,729.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392 : 40,624 = 40,624 : x
  2. Step 2: Convert to fraction form
    18,392/40,624 = 40,624/x
  3. Step 3: Cross multiply
    18,392x = 40,624 × 40,624
  4. Step 4: Simplify right side
    18,392x = 1,650,309,376
  5. Step 5: Solve for x
    x = 1,650,309,376/18,392
  6. Step 6: Final answer
    x = 89,729.74

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.