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Finding the Fourth Proportional to 88,335.68, 121,911.84 and 65,940.80

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Solution

The fourth proportional to 88,335.68, 121,911.84 and 65,940.80 is: 91,004.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,335.68 : 121,911.84 = 65,940.80 : x
  2. Step 2: Convert to fraction form
    88,335.68/121,911.84 = 65,940.80/x
  3. Step 3: Cross multiply
    88,335.68x = 121,911.84 × 65,940.80
  4. Step 4: Simplify right side
    88,335.68x = 8,038,964,259.07
  5. Step 5: Solve for x
    x = 8,038,964,259.07/88,335.68
  6. Step 6: Final answer
    x = 91,004.72

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