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Finding the Third Proportional to 42,398 and 92,080

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Solution

The third proportional to 42,398 and 92,080 is: 199,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,398 : 92,080 = 92,080 : x
  2. Step 2: Convert to fraction form
    42,398/92,080 = 92,080/x
  3. Step 3: Cross multiply
    42,398x = 92,080 × 92,080
  4. Step 4: Simplify right side
    42,398x = 8,478,726,400
  5. Step 5: Solve for x
    x = 8,478,726,400/42,398
  6. Step 6: Final answer
    x = 199,979.40

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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.