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Finding the Fourth Proportional to 90,622.64, 135,933.96 and 28,298.48

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Solution

The fourth proportional to 90,622.64, 135,933.96 and 28,298.48 is: 42,447.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,622.64 : 135,933.96 = 28,298.48 : x
  2. Step 2: Convert to fraction form
    90,622.64/135,933.96 = 28,298.48/x
  3. Step 3: Cross multiply
    90,622.64x = 135,933.96 × 28,298.48
  4. Step 4: Simplify right side
    90,622.64x = 3,846,724,448.38
  5. Step 5: Solve for x
    x = 3,846,724,448.38/90,622.64
  6. Step 6: Final answer
    x = 42,447.72

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