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Finding the Fourth Proportional to 80,350.44, 120,511.95 and 21,186.69

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Solution

The fourth proportional to 80,350.44, 120,511.95 and 21,186.69 is: 31,776.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,350.44 : 120,511.95 = 21,186.69 : x
  2. Step 2: Convert to fraction form
    80,350.44/120,511.95 = 21,186.69/x
  3. Step 3: Cross multiply
    80,350.44x = 120,511.95 × 21,186.69
  4. Step 4: Simplify right side
    80,350.44x = 2,553,249,325.95
  5. Step 5: Solve for x
    x = 2,553,249,325.95/80,350.44
  6. Step 6: Final answer
    x = 31,776.42

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