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Finding the Fourth Proportional to 43,479.87, 65,249.03 and 15,399.82

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Solution

The fourth proportional to 43,479.87, 65,249.03 and 15,399.82 is: 23,110.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,479.87 : 65,249.03 = 15,399.82 : x
  2. Step 2: Convert to fraction form
    43,479.87/65,249.03 = 15,399.82/x
  3. Step 3: Cross multiply
    43,479.87x = 65,249.03 × 15,399.82
  4. Step 4: Simplify right side
    43,479.87x = 1,004,823,240.18
  5. Step 5: Solve for x
    x = 1,004,823,240.18/43,479.87
  6. Step 6: Final answer
    x = 23,110.08

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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.