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Finding the Third Proportional to 56,668 and 87,440

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Solution

The third proportional to 56,668 and 87,440 is: 134,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,668 : 87,440 = 87,440 : x
  2. Step 2: Convert to fraction form
    56,668/87,440 = 87,440/x
  3. Step 3: Cross multiply
    56,668x = 87,440 × 87,440
  4. Step 4: Simplify right side
    56,668x = 7,645,753,600
  5. Step 5: Solve for x
    x = 7,645,753,600/56,668
  6. Step 6: Final answer
    x = 134,921.89

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.