Home / 57,786.20-86,679.30-54,578.60

Finding the Fourth Proportional to 57,786.20, 86,679.30 and 54,578.60

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Solution

The fourth proportional to 57,786.20, 86,679.30 and 54,578.60 is: 81,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,786.20 : 86,679.30 = 54,578.60 : x
  2. Step 2: Convert to fraction form
    57,786.20/86,679.30 = 54,578.60/x
  3. Step 3: Cross multiply
    57,786.20x = 86,679.30 × 54,578.60
  4. Step 4: Simplify right side
    57,786.20x = 4,730,834,842.98
  5. Step 5: Solve for x
    x = 4,730,834,842.98/57,786.20
  6. Step 6: Final answer
    x = 81,867.90

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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.