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Finding the Fourth Proportional to 39,325.56, 54,268.80 and 21,420.50

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Solution

The fourth proportional to 39,325.56, 54,268.80 and 21,420.50 is: 29,560.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,325.56 : 54,268.80 = 21,420.50 : x
  2. Step 2: Convert to fraction form
    39,325.56/54,268.80 = 21,420.50/x
  3. Step 3: Cross multiply
    39,325.56x = 54,268.80 × 21,420.50
  4. Step 4: Simplify right side
    39,325.56x = 1,162,464,830.40
  5. Step 5: Solve for x
    x = 1,162,464,830.40/39,325.56
  6. Step 6: Final answer
    x = 29,560.03

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