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Finding the Fourth Proportional to 72,932.89, 109,355.60 and 28,506.72

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Solution

The fourth proportional to 72,932.89, 109,355.60 and 28,506.72 is: 42,742.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,932.89 : 109,355.60 = 28,506.72 : x
  2. Step 2: Convert to fraction form
    72,932.89/109,355.60 = 28,506.72/x
  3. Step 3: Cross multiply
    72,932.89x = 109,355.60 × 28,506.72
  4. Step 4: Simplify right side
    72,932.89x = 3,117,369,469.63
  5. Step 5: Solve for x
    x = 3,117,369,469.63/72,932.89
  6. Step 6: Final answer
    x = 42,742.99

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