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Finding the Third Proportional to 40,215 and 87,880

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Solution

The third proportional to 40,215 and 87,880 is: 192,040.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,215 : 87,880 = 87,880 : x
  2. Step 2: Convert to fraction form
    40,215/87,880 = 87,880/x
  3. Step 3: Cross multiply
    40,215x = 87,880 × 87,880
  4. Step 4: Simplify right side
    40,215x = 7,722,894,400
  5. Step 5: Solve for x
    x = 7,722,894,400/40,215
  6. Step 6: Final answer
    x = 192,040.14

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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.