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Finding the Fourth Proportional to 85,548.64, 128,072.72 and 49,900.96

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Solution

The fourth proportional to 85,548.64, 128,072.72 and 49,900.96 is: 74,705.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,548.64 : 128,072.72 = 49,900.96 : x
  2. Step 2: Convert to fraction form
    85,548.64/128,072.72 = 49,900.96/x
  3. Step 3: Cross multiply
    85,548.64x = 128,072.72 × 49,900.96
  4. Step 4: Simplify right side
    85,548.64x = 6,390,951,677.81
  5. Step 5: Solve for x
    x = 6,390,951,677.81/85,548.64
  6. Step 6: Final answer
    x = 74,705.47

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