Home / 57,745.85-86,621.20-18,302.09

Finding the Fourth Proportional to 57,745.85, 86,621.20 and 18,302.09

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Solution

The fourth proportional to 57,745.85, 86,621.20 and 18,302.09 is: 27,453.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,745.85 : 86,621.20 = 18,302.09 : x
  2. Step 2: Convert to fraction form
    57,745.85/86,621.20 = 18,302.09/x
  3. Step 3: Cross multiply
    57,745.85x = 86,621.20 × 18,302.09
  4. Step 4: Simplify right side
    57,745.85x = 1,585,348,519.45
  5. Step 5: Solve for x
    x = 1,585,348,519.45/57,745.85
  6. Step 6: Final answer
    x = 27,453.90

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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.