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Finding the Third Proportional to 67,712.25 and 145,830

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Solution

The third proportional to 67,712.25 and 145,830 is: 314,070.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,712.25 : 145,830 = 145,830 : x
  2. Step 2: Convert to fraction form
    67,712.25/145,830 = 145,830/x
  3. Step 3: Cross multiply
    67,712.25x = 145,830 × 145,830
  4. Step 4: Simplify right side
    67,712.25x = 21,266,388,900
  5. Step 5: Solve for x
    x = 21,266,388,900/67,712.25
  6. Step 6: Final answer
    x = 314,070.04

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.