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Finding the Fourth Proportional to 85,628.82, 128,411.36 and 29,453.16

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Solution

The fourth proportional to 85,628.82, 128,411.36 and 29,453.16 is: 44,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,628.82 : 128,411.36 = 29,453.16 : x
  2. Step 2: Convert to fraction form
    85,628.82/128,411.36 = 29,453.16/x
  3. Step 3: Cross multiply
    85,628.82x = 128,411.36 × 29,453.16
  4. Step 4: Simplify right side
    85,628.82x = 3,782,120,331.90
  5. Step 5: Solve for x
    x = 3,782,120,331.90/85,628.82
  6. Step 6: Final answer
    x = 44,168.78

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