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Finding the Third Proportional to 18,238 and 40,040

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Solution

The third proportional to 18,238 and 40,040 is: 87,904.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238 : 40,040 = 40,040 : x
  2. Step 2: Convert to fraction form
    18,238/40,040 = 40,040/x
  3. Step 3: Cross multiply
    18,238x = 40,040 × 40,040
  4. Step 4: Simplify right side
    18,238x = 1,603,201,600
  5. Step 5: Solve for x
    x = 1,603,201,600/18,238
  6. Step 6: Final answer
    x = 87,904.46

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.