Home / 40,311.60-60,395.40-19,489.20

Finding the Fourth Proportional to 40,311.60, 60,395.40 and 19,489.20

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Solution

The fourth proportional to 40,311.60, 60,395.40 and 19,489.20 is: 29,198.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,311.60 : 60,395.40 = 19,489.20 : x
  2. Step 2: Convert to fraction form
    40,311.60/60,395.40 = 19,489.20/x
  3. Step 3: Cross multiply
    40,311.60x = 60,395.40 × 19,489.20
  4. Step 4: Simplify right side
    40,311.60x = 1,177,058,029.68
  5. Step 5: Solve for x
    x = 1,177,058,029.68/40,311.60
  6. Step 6: Final answer
    x = 29,198.99

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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.