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Finding the Fourth Proportional to 69,163.52, 103,745.36 and 19,243.64

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Solution

The fourth proportional to 69,163.52, 103,745.36 and 19,243.64 is: 28,865.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,163.52 : 103,745.36 = 19,243.64 : x
  2. Step 2: Convert to fraction form
    69,163.52/103,745.36 = 19,243.64/x
  3. Step 3: Cross multiply
    69,163.52x = 103,745.36 × 19,243.64
  4. Step 4: Simplify right side
    69,163.52x = 1,996,438,359.51
  5. Step 5: Solve for x
    x = 1,996,438,359.51/69,163.52
  6. Step 6: Final answer
    x = 28,865.48

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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.