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Finding the Third Proportional to 56,742 and 85,902.75

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Solution

The third proportional to 56,742 and 85,902.75 is: 130,049.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,742 : 85,902.75 = 85,902.75 : x
  2. Step 2: Convert to fraction form
    56,742/85,902.75 = 85,902.75/x
  3. Step 3: Cross multiply
    56,742x = 85,902.75 × 85,902.75
  4. Step 4: Simplify right side
    56,742x = 7,379,282,457.56
  5. Step 5: Solve for x
    x = 7,379,282,457.56/56,742
  6. Step 6: Final answer
    x = 130,049.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.