Home / 40,831.20-61,198.20-17,138.70

Finding the Fourth Proportional to 40,831.20, 61,198.20 and 17,138.70

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Solution

The fourth proportional to 40,831.20, 61,198.20 and 17,138.70 is: 25,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,831.20 : 61,198.20 = 17,138.70 : x
  2. Step 2: Convert to fraction form
    40,831.20/61,198.20 = 17,138.70/x
  3. Step 3: Cross multiply
    40,831.20x = 61,198.20 × 17,138.70
  4. Step 4: Simplify right side
    40,831.20x = 1,048,857,590.34
  5. Step 5: Solve for x
    x = 1,048,857,590.34/40,831.20
  6. Step 6: Final answer
    x = 25,687.65

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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.