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Finding the Fourth Proportional to 69,802.75, 104,724.78 and 40,241.80

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Solution

The fourth proportional to 69,802.75, 104,724.78 and 40,241.80 is: 60,374.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,802.75 : 104,724.78 = 40,241.80 : x
  2. Step 2: Convert to fraction form
    69,802.75/104,724.78 = 40,241.80/x
  3. Step 3: Cross multiply
    69,802.75x = 104,724.78 × 40,241.80
  4. Step 4: Simplify right side
    69,802.75x = 4,214,313,651.80
  5. Step 5: Solve for x
    x = 4,214,313,651.80/69,802.75
  6. Step 6: Final answer
    x = 60,374.61

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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.