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Finding the Third Proportional to 18,915 and 41,145

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Solution

The third proportional to 18,915 and 41,145 is: 89,500.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915 : 41,145 = 41,145 : x
  2. Step 2: Convert to fraction form
    18,915/41,145 = 41,145/x
  3. Step 3: Cross multiply
    18,915x = 41,145 × 41,145
  4. Step 4: Simplify right side
    18,915x = 1,692,911,025
  5. Step 5: Solve for x
    x = 1,692,911,025/18,915
  6. Step 6: Final answer
    x = 89,500.98

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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.