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Finding the Fourth Proportional to 69,578.31, 104,371.79 and 19,662.23

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Solution

The fourth proportional to 69,578.31, 104,371.79 and 19,662.23 is: 29,494.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,578.31 : 104,371.79 = 19,662.23 : x
  2. Step 2: Convert to fraction form
    69,578.31/104,371.79 = 19,662.23/x
  3. Step 3: Cross multiply
    69,578.31x = 104,371.79 × 19,662.23
  4. Step 4: Simplify right side
    69,578.31x = 2,052,181,520.32
  5. Step 5: Solve for x
    x = 2,052,181,520.32/69,578.31
  6. Step 6: Final answer
    x = 29,494.56

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1.5x scale

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.