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Finding the Third Proportional to 67,840 and 97,729

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Solution

The third proportional to 67,840 and 97,729 is: 140,786.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,840 : 97,729 = 97,729 : x
  2. Step 2: Convert to fraction form
    67,840/97,729 = 97,729/x
  3. Step 3: Cross multiply
    67,840x = 97,729 × 97,729
  4. Step 4: Simplify right side
    67,840x = 9,550,957,441
  5. Step 5: Solve for x
    x = 9,550,957,441/67,840
  6. Step 6: Final answer
    x = 140,786.52

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.