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Finding the Third Proportional to 55,613 and 86,185

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Solution

The third proportional to 55,613 and 86,185 is: 133,563.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,613 : 86,185 = 86,185 : x
  2. Step 2: Convert to fraction form
    55,613/86,185 = 86,185/x
  3. Step 3: Cross multiply
    55,613x = 86,185 × 86,185
  4. Step 4: Simplify right side
    55,613x = 7,427,854,225
  5. Step 5: Solve for x
    x = 7,427,854,225/55,613
  6. Step 6: Final answer
    x = 133,563.27

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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.