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Finding the Third Proportional to 43,140.50 and 67,687

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Solution

The third proportional to 43,140.50 and 67,687 is: 106,200.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,140.50 : 67,687 = 67,687 : x
  2. Step 2: Convert to fraction form
    43,140.50/67,687 = 67,687/x
  3. Step 3: Cross multiply
    43,140.50x = 67,687 × 67,687
  4. Step 4: Simplify right side
    43,140.50x = 4,581,529,969
  5. Step 5: Solve for x
    x = 4,581,529,969/43,140.50
  6. Step 6: Final answer
    x = 106,200.21

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.