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Finding the Fourth Proportional to 76,269, 105,119.77 and 50,729.70

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Solution

The fourth proportional to 76,269, 105,119.77 and 50,729.70 is: 69,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,269 : 105,119.77 = 50,729.70 : x
  2. Step 2: Convert to fraction form
    76,269/105,119.77 = 50,729.70/x
  3. Step 3: Cross multiply
    76,269x = 105,119.77 × 50,729.70
  4. Step 4: Simplify right side
    76,269x = 5,332,694,269.34
  5. Step 5: Solve for x
    x = 5,332,694,269.34/76,269
  6. Step 6: Final answer
    x = 69,919.55

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