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Finding the Third Proportional to 67,239 and 91,365.75

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Solution

The third proportional to 67,239 and 91,365.75 is: 124,149.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,239 : 91,365.75 = 91,365.75 : x
  2. Step 2: Convert to fraction form
    67,239/91,365.75 = 91,365.75/x
  3. Step 3: Cross multiply
    67,239x = 91,365.75 × 91,365.75
  4. Step 4: Simplify right side
    67,239x = 8,347,700,273.06
  5. Step 5: Solve for x
    x = 8,347,700,273.06/67,239
  6. Step 6: Final answer
    x = 124,149.68

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.