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Finding the Fourth Proportional to 30,046.21, 45,065.86 and 7,861.74

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Solution

The fourth proportional to 30,046.21, 45,065.86 and 7,861.74 is: 11,791.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,046.21 : 45,065.86 = 7,861.74 : x
  2. Step 2: Convert to fraction form
    30,046.21/45,065.86 = 7,861.74/x
  3. Step 3: Cross multiply
    30,046.21x = 45,065.86 × 7,861.74
  4. Step 4: Simplify right side
    30,046.21x = 354,296,074.20
  5. Step 5: Solve for x
    x = 354,296,074.20/30,046.21
  6. Step 6: Final answer
    x = 11,791.71

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