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Finding the Fourth Proportional to 69,074.11, 103,600.86 and 19,149

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Solution

The fourth proportional to 69,074.11, 103,600.86 and 19,149 is: 28,720.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,074.11 : 103,600.86 = 19,149 : x
  2. Step 2: Convert to fraction form
    69,074.11/103,600.86 = 19,149/x
  3. Step 3: Cross multiply
    69,074.11x = 103,600.86 × 19,149
  4. Step 4: Simplify right side
    69,074.11x = 1,983,852,868.14
  5. Step 5: Solve for x
    x = 1,983,852,868.14/69,074.11
  6. Step 6: Final answer
    x = 28,720.64

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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.