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Finding the Third Proportional to 64,884 and 140,785

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Solution

The third proportional to 64,884 and 140,785 is: 305,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,884 : 140,785 = 140,785 : x
  2. Step 2: Convert to fraction form
    64,884/140,785 = 140,785/x
  3. Step 3: Cross multiply
    64,884x = 140,785 × 140,785
  4. Step 4: Simplify right side
    64,884x = 19,820,416,225
  5. Step 5: Solve for x
    x = 19,820,416,225/64,884
  6. Step 6: Final answer
    x = 305,474.64

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.