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Finding the Fourth Proportional to 85,626.81, 128,408.36 and 29,451.15

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Solution

The fourth proportional to 85,626.81, 128,408.36 and 29,451.15 is: 44,165.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,626.81 : 128,408.36 = 29,451.15 : x
  2. Step 2: Convert to fraction form
    85,626.81/128,408.36 = 29,451.15/x
  3. Step 3: Cross multiply
    85,626.81x = 128,408.36 × 29,451.15
  4. Step 4: Simplify right side
    85,626.81x = 3,781,773,724.36
  5. Step 5: Solve for x
    x = 3,781,773,724.36/85,626.81
  6. Step 6: Final answer
    x = 44,165.77

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