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Finding the Third Proportional to 55,690 and 86,364

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Solution

The third proportional to 55,690 and 86,364 is: 133,933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,690 : 86,364 = 86,364 : x
  2. Step 2: Convert to fraction form
    55,690/86,364 = 86,364/x
  3. Step 3: Cross multiply
    55,690x = 86,364 × 86,364
  4. Step 4: Simplify right side
    55,690x = 7,458,740,496
  5. Step 5: Solve for x
    x = 7,458,740,496/55,690
  6. Step 6: Final answer
    x = 133,933.21

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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.