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Finding the Third Proportional to 56,928 and 85,668

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Solution

The third proportional to 56,928 and 85,668 is: 128,917.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,928 : 85,668 = 85,668 : x
  2. Step 2: Convert to fraction form
    56,928/85,668 = 85,668/x
  3. Step 3: Cross multiply
    56,928x = 85,668 × 85,668
  4. Step 4: Simplify right side
    56,928x = 7,339,006,224
  5. Step 5: Solve for x
    x = 7,339,006,224/56,928
  6. Step 6: Final answer
    x = 128,917.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.