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Finding the Third Proportional to 56,778 and 87,861

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Solution

The third proportional to 56,778 and 87,861 is: 135,960.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,778 : 87,861 = 87,861 : x
  2. Step 2: Convert to fraction form
    56,778/87,861 = 87,861/x
  3. Step 3: Cross multiply
    56,778x = 87,861 × 87,861
  4. Step 4: Simplify right side
    56,778x = 7,719,555,321
  5. Step 5: Solve for x
    x = 7,719,555,321/56,778
  6. Step 6: Final answer
    x = 135,960.32

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.