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Finding the Fourth Proportional to 69,661.94, 96,139.41 and 39,452.54

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Solution

The fourth proportional to 69,661.94, 96,139.41 and 39,452.54 is: 54,447.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,661.94 : 96,139.41 = 39,452.54 : x
  2. Step 2: Convert to fraction form
    69,661.94/96,139.41 = 39,452.54/x
  3. Step 3: Cross multiply
    69,661.94x = 96,139.41 × 39,452.54
  4. Step 4: Simplify right side
    69,661.94x = 3,792,943,918.60
  5. Step 5: Solve for x
    x = 3,792,943,918.60/69,661.94
  6. Step 6: Final answer
    x = 54,447.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.