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Finding the Fourth Proportional to 43,976.78, 65,974.42 and 14,392.32

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Solution

The fourth proportional to 43,976.78, 65,974.42 and 14,392.32 is: 21,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,976.78 : 65,974.42 = 14,392.32 : x
  2. Step 2: Convert to fraction form
    43,976.78/65,974.42 = 14,392.32/x
  3. Step 3: Cross multiply
    43,976.78x = 65,974.42 × 14,392.32
  4. Step 4: Simplify right side
    43,976.78x = 949,524,964.45
  5. Step 5: Solve for x
    x = 949,524,964.45/43,976.78
  6. Step 6: Final answer
    x = 21,591.51

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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.