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Finding the Third Proportional to 56,756 and 81,615

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Solution

The third proportional to 56,756 and 81,615 is: 117,362.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,756 : 81,615 = 81,615 : x
  2. Step 2: Convert to fraction form
    56,756/81,615 = 81,615/x
  3. Step 3: Cross multiply
    56,756x = 81,615 × 81,615
  4. Step 4: Simplify right side
    56,756x = 6,661,008,225
  5. Step 5: Solve for x
    x = 6,661,008,225/56,756
  6. Step 6: Final answer
    x = 117,362.19

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.