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Finding the Fourth Proportional to 43,422.60, 65,133.72 and 18,458.76

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Solution

The fourth proportional to 43,422.60, 65,133.72 and 18,458.76 is: 27,688.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,422.60 : 65,133.72 = 18,458.76 : x
  2. Step 2: Convert to fraction form
    43,422.60/65,133.72 = 18,458.76/x
  3. Step 3: Cross multiply
    43,422.60x = 65,133.72 × 18,458.76
  4. Step 4: Simplify right side
    43,422.60x = 1,202,287,705.39
  5. Step 5: Solve for x
    x = 1,202,287,705.39/43,422.60
  6. Step 6: Final answer
    x = 27,688.06

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