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Finding the Third Proportional to 30,246 and 65,109

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Solution

The third proportional to 30,246 and 65,109 is: 140,156.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,246 : 65,109 = 65,109 : x
  2. Step 2: Convert to fraction form
    30,246/65,109 = 65,109/x
  3. Step 3: Cross multiply
    30,246x = 65,109 × 65,109
  4. Step 4: Simplify right side
    30,246x = 4,239,181,881
  5. Step 5: Solve for x
    x = 4,239,181,881/30,246
  6. Step 6: Final answer
    x = 140,156.78

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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.