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Finding the Third Proportional to 30,981 and 65,958

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Solution

The third proportional to 30,981 and 65,958 is: 140,423.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981 : 65,958 = 65,958 : x
  2. Step 2: Convert to fraction form
    30,981/65,958 = 65,958/x
  3. Step 3: Cross multiply
    30,981x = 65,958 × 65,958
  4. Step 4: Simplify right side
    30,981x = 4,350,457,764
  5. Step 5: Solve for x
    x = 4,350,457,764/30,981
  6. Step 6: Final answer
    x = 140,423.41

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.