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Finding the Third Proportional to 18,472 and 40,040

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Solution

The third proportional to 18,472 and 40,040 is: 86,790.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472 : 40,040 = 40,040 : x
  2. Step 2: Convert to fraction form
    18,472/40,040 = 40,040/x
  3. Step 3: Cross multiply
    18,472x = 40,040 × 40,040
  4. Step 4: Simplify right side
    18,472x = 1,603,201,600
  5. Step 5: Solve for x
    x = 1,603,201,600/18,472
  6. Step 6: Final answer
    x = 86,790.91

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.