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Finding the Fourth Proportional to 81,638.46, 112,628.88 and 47,160.41

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Solution

The fourth proportional to 81,638.46, 112,628.88 and 47,160.41 is: 65,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,638.46 : 112,628.88 = 47,160.41 : x
  2. Step 2: Convert to fraction form
    81,638.46/112,628.88 = 47,160.41/x
  3. Step 3: Cross multiply
    81,638.46x = 112,628.88 × 47,160.41
  4. Step 4: Simplify right side
    81,638.46x = 5,311,623,595.50
  5. Step 5: Solve for x
    x = 5,311,623,595.50/81,638.46
  6. Step 6: Final answer
    x = 65,062.76

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