Home / 86,591.43-129,900.78-36,671.85

Finding the Fourth Proportional to 86,591.43, 129,900.78 and 36,671.85

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Solution

The fourth proportional to 86,591.43, 129,900.78 and 36,671.85 is: 55,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,591.43 : 129,900.78 = 36,671.85 : x
  2. Step 2: Convert to fraction form
    86,591.43/129,900.78 = 36,671.85/x
  3. Step 3: Cross multiply
    86,591.43x = 129,900.78 × 36,671.85
  4. Step 4: Simplify right side
    86,591.43x = 4,763,701,919.04
  5. Step 5: Solve for x
    x = 4,763,701,919.04/86,591.43
  6. Step 6: Final answer
    x = 55,013.55

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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.