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Finding the Fourth Proportional to 69,921.09, 96,487.80 and 39,702.48

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Solution

The fourth proportional to 69,921.09, 96,487.80 and 39,702.48 is: 54,787.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,921.09 : 96,487.80 = 39,702.48 : x
  2. Step 2: Convert to fraction form
    69,921.09/96,487.80 = 39,702.48/x
  3. Step 3: Cross multiply
    69,921.09x = 96,487.80 × 39,702.48
  4. Step 4: Simplify right side
    69,921.09x = 3,830,804,949.74
  5. Step 5: Solve for x
    x = 3,830,804,949.74/69,921.09
  6. Step 6: Final answer
    x = 54,787.55

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