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Finding the Fourth Proportional to 57,090.32, 78,811.08 and 33,208.28

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Solution

The fourth proportional to 57,090.32, 78,811.08 and 33,208.28 is: 45,842.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,090.32 : 78,811.08 = 33,208.28 : x
  2. Step 2: Convert to fraction form
    57,090.32/78,811.08 = 33,208.28/x
  3. Step 3: Cross multiply
    57,090.32x = 78,811.08 × 33,208.28
  4. Step 4: Simplify right side
    57,090.32x = 2,617,180,411.74
  5. Step 5: Solve for x
    x = 2,617,180,411.74/57,090.32
  6. Step 6: Final answer
    x = 45,842.81

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