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Finding the Fourth Proportional to 69,760.54, 104,629.62 and 19,147.75

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Solution

The fourth proportional to 69,760.54, 104,629.62 and 19,147.75 is: 28,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,760.54 : 104,629.62 = 19,147.75 : x
  2. Step 2: Convert to fraction form
    69,760.54/104,629.62 = 19,147.75/x
  3. Step 3: Cross multiply
    69,760.54x = 104,629.62 × 19,147.75
  4. Step 4: Simplify right side
    69,760.54x = 2,003,421,806.36
  5. Step 5: Solve for x
    x = 2,003,421,806.36/69,760.54
  6. Step 6: Final answer
    x = 28,718.55

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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.