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Finding the Third Proportional to 55,418.75 and 85,987.13

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Solution

The third proportional to 55,418.75 and 85,987.13 is: 133,416.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,418.75 : 85,987.13 = 85,987.13 : x
  2. Step 2: Convert to fraction form
    55,418.75/85,987.13 = 85,987.13/x
  3. Step 3: Cross multiply
    55,418.75x = 85,987.13 × 85,987.13
  4. Step 4: Simplify right side
    55,418.75x = 7,393,785,665.77
  5. Step 5: Solve for x
    x = 7,393,785,665.77/55,418.75
  6. Step 6: Final answer
    x = 133,416.68

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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.