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Finding the Third Proportional to 18,618 and 40,516

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Solution

The third proportional to 18,618 and 40,516 is: 88,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618 : 40,516 = 40,516 : x
  2. Step 2: Convert to fraction form
    18,618/40,516 = 40,516/x
  3. Step 3: Cross multiply
    18,618x = 40,516 × 40,516
  4. Step 4: Simplify right side
    18,618x = 1,641,546,256
  5. Step 5: Solve for x
    x = 1,641,546,256/18,618
  6. Step 6: Final answer
    x = 88,169.85

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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.