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Finding the Third Proportional to 30,855.25 and 67,285.75

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Solution

The third proportional to 30,855.25 and 67,285.75 is: 146,729.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.25 : 67,285.75 = 67,285.75 : x
  2. Step 2: Convert to fraction form
    30,855.25/67,285.75 = 67,285.75/x
  3. Step 3: Cross multiply
    30,855.25x = 67,285.75 × 67,285.75
  4. Step 4: Simplify right side
    30,855.25x = 4,527,372,153.06
  5. Step 5: Solve for x
    x = 4,527,372,153.06/30,855.25
  6. Step 6: Final answer
    x = 146,729.39

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.