Home / 40,138.42-55,388.46-23,141.78

Finding the Fourth Proportional to 40,138.42, 55,388.46 and 23,141.78

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Solution

The fourth proportional to 40,138.42, 55,388.46 and 23,141.78 is: 31,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.42 : 55,388.46 = 23,141.78 : x
  2. Step 2: Convert to fraction form
    40,138.42/55,388.46 = 23,141.78/x
  3. Step 3: Cross multiply
    40,138.42x = 55,388.46 × 23,141.78
  4. Step 4: Simplify right side
    40,138.42x = 1,281,787,555.86
  5. Step 5: Solve for x
    x = 1,281,787,555.86/40,138.42
  6. Step 6: Final answer
    x = 31,934.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.