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Finding the Fourth Proportional to 69,907.96, 104,778.69 and 40,264.39

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Solution

The fourth proportional to 69,907.96, 104,778.69 and 40,264.39 is: 60,348.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,907.96 : 104,778.69 = 40,264.39 : x
  2. Step 2: Convert to fraction form
    69,907.96/104,778.69 = 40,264.39/x
  3. Step 3: Cross multiply
    69,907.96x = 104,778.69 × 40,264.39
  4. Step 4: Simplify right side
    69,907.96x = 4,218,850,037.85
  5. Step 5: Solve for x
    x = 4,218,850,037.85/69,907.96
  6. Step 6: Final answer
    x = 60,348.64

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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.