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Finding the Third Proportional to 57,450.50 and 85,831

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Solution

The third proportional to 57,450.50 and 85,831 is: 128,231.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,450.50 : 85,831 = 85,831 : x
  2. Step 2: Convert to fraction form
    57,450.50/85,831 = 85,831/x
  3. Step 3: Cross multiply
    57,450.50x = 85,831 × 85,831
  4. Step 4: Simplify right side
    57,450.50x = 7,366,960,561
  5. Step 5: Solve for x
    x = 7,366,960,561/57,450.50
  6. Step 6: Final answer
    x = 128,231.44

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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.