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Finding the Third Proportional to 30,710.25 and 66,979.13

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Solution

The third proportional to 30,710.25 and 66,979.13 is: 146,081.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,710.25 : 66,979.13 = 66,979.13 : x
  2. Step 2: Convert to fraction form
    30,710.25/66,979.13 = 66,979.13/x
  3. Step 3: Cross multiply
    30,710.25x = 66,979.13 × 66,979.13
  4. Step 4: Simplify right side
    30,710.25x = 4,486,203,185.77
  5. Step 5: Solve for x
    x = 4,486,203,185.77/30,710.25
  6. Step 6: Final answer
    x = 146,081.62

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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.