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Finding the Third Proportional to 55,991 and 86,704

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Solution

The third proportional to 55,991 and 86,704 is: 134,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,991 : 86,704 = 86,704 : x
  2. Step 2: Convert to fraction form
    55,991/86,704 = 86,704/x
  3. Step 3: Cross multiply
    55,991x = 86,704 × 86,704
  4. Step 4: Simplify right side
    55,991x = 7,517,583,616
  5. Step 5: Solve for x
    x = 7,517,583,616/55,991
  6. Step 6: Final answer
    x = 134,264.14

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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.