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Finding the Third Proportional to 57,482 and 85,868

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Solution

The third proportional to 57,482 and 85,868 is: 128,271.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,482 : 85,868 = 85,868 : x
  2. Step 2: Convert to fraction form
    57,482/85,868 = 85,868/x
  3. Step 3: Cross multiply
    57,482x = 85,868 × 85,868
  4. Step 4: Simplify right side
    57,482x = 7,373,313,424
  5. Step 5: Solve for x
    x = 7,373,313,424/57,482
  6. Step 6: Final answer
    x = 128,271.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.