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Finding the Fourth Proportional to 70,906.88, 97,779.20 and 49,679.36

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Solution

The fourth proportional to 70,906.88, 97,779.20 and 49,679.36 is: 68,506.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,906.88 : 97,779.20 = 49,679.36 : x
  2. Step 2: Convert to fraction form
    70,906.88/97,779.20 = 49,679.36/x
  3. Step 3: Cross multiply
    70,906.88x = 97,779.20 × 49,679.36
  4. Step 4: Simplify right side
    70,906.88x = 4,857,608,077.31
  5. Step 5: Solve for x
    x = 4,857,608,077.31/70,906.88
  6. Step 6: Final answer
    x = 68,506.87

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