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Finding the Fourth Proportional to 43,963.19, 65,963.24 and 18,990.39

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Solution

The fourth proportional to 43,963.19, 65,963.24 and 18,990.39 is: 28,493.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,963.19 : 65,963.24 = 18,990.39 : x
  2. Step 2: Convert to fraction form
    43,963.19/65,963.24 = 18,990.39/x
  3. Step 3: Cross multiply
    43,963.19x = 65,963.24 × 18,990.39
  4. Step 4: Simplify right side
    43,963.19x = 1,252,667,653.26
  5. Step 5: Solve for x
    x = 1,252,667,653.26/43,963.19
  6. Step 6: Final answer
    x = 28,493.56

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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.