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Finding the Fourth Proportional to 69,978.62, 104,998.92 and 36,690.74

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Solution

The fourth proportional to 69,978.62, 104,998.92 and 36,690.74 is: 55,052.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,978.62 : 104,998.92 = 36,690.74 : x
  2. Step 2: Convert to fraction form
    69,978.62/104,998.92 = 36,690.74/x
  3. Step 3: Cross multiply
    69,978.62x = 104,998.92 × 36,690.74
  4. Step 4: Simplify right side
    69,978.62x = 3,852,488,074.00
  5. Step 5: Solve for x
    x = 3,852,488,074.00/69,978.62
  6. Step 6: Final answer
    x = 55,052.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.