Home / 66,170.88-99,262.20-18,786.66

Finding the Fourth Proportional to 66,170.88, 99,262.20 and 18,786.66

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Solution

The fourth proportional to 66,170.88, 99,262.20 and 18,786.66 is: 28,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,170.88 : 99,262.20 = 18,786.66 : x
  2. Step 2: Convert to fraction form
    66,170.88/99,262.20 = 18,786.66/x
  3. Step 3: Cross multiply
    66,170.88x = 99,262.20 × 18,786.66
  4. Step 4: Simplify right side
    66,170.88x = 1,864,805,202.25
  5. Step 5: Solve for x
    x = 1,864,805,202.25/66,170.88
  6. Step 6: Final answer
    x = 28,181.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.