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Finding the Third Proportional to 30,126 and 65,805

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Solution

The third proportional to 30,126 and 65,805 is: 143,739.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126 : 65,805 = 65,805 : x
  2. Step 2: Convert to fraction form
    30,126/65,805 = 65,805/x
  3. Step 3: Cross multiply
    30,126x = 65,805 × 65,805
  4. Step 4: Simplify right side
    30,126x = 4,330,298,025
  5. Step 5: Solve for x
    x = 4,330,298,025/30,126
  6. Step 6: Final answer
    x = 143,739.56

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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.