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Finding the Fourth Proportional to 69,761.40, 104,578.81 and 25,356.79

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Solution

The fourth proportional to 69,761.40, 104,578.81 and 25,356.79 is: 38,012.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,761.40 : 104,578.81 = 25,356.79 : x
  2. Step 2: Convert to fraction form
    69,761.40/104,578.81 = 25,356.79/x
  3. Step 3: Cross multiply
    69,761.40x = 104,578.81 × 25,356.79
  4. Step 4: Simplify right side
    69,761.40x = 2,651,782,923.62
  5. Step 5: Solve for x
    x = 2,651,782,923.62/69,761.40
  6. Step 6: Final answer
    x = 38,012.18

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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.