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Finding the Third Proportional to 74,091 and 97,831

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Solution

The third proportional to 74,091 and 97,831 is: 129,177.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,091 : 97,831 = 97,831 : x
  2. Step 2: Convert to fraction form
    74,091/97,831 = 97,831/x
  3. Step 3: Cross multiply
    74,091x = 97,831 × 97,831
  4. Step 4: Simplify right side
    74,091x = 9,570,904,561
  5. Step 5: Solve for x
    x = 9,570,904,561/74,091
  6. Step 6: Final answer
    x = 129,177.69

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.