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Finding the Fourth Proportional to 39,759.76, 54,868.90 and 21,610.50

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Solution

The fourth proportional to 39,759.76, 54,868.90 and 21,610.50 is: 29,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.76 : 54,868.90 = 21,610.50 : x
  2. Step 2: Convert to fraction form
    39,759.76/54,868.90 = 21,610.50/x
  3. Step 3: Cross multiply
    39,759.76x = 54,868.90 × 21,610.50
  4. Step 4: Simplify right side
    39,759.76x = 1,185,744,363.45
  5. Step 5: Solve for x
    x = 1,185,744,363.45/39,759.76
  6. Step 6: Final answer
    x = 29,822.72

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