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Finding the Fourth Proportional to 72,811.08, 100,488.96 and 40,986.24

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Solution

The fourth proportional to 72,811.08, 100,488.96 and 40,986.24 is: 56,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,811.08 : 100,488.96 = 40,986.24 : x
  2. Step 2: Convert to fraction form
    72,811.08/100,488.96 = 40,986.24/x
  3. Step 3: Cross multiply
    72,811.08x = 100,488.96 × 40,986.24
  4. Step 4: Simplify right side
    72,811.08x = 4,118,664,631.91
  5. Step 5: Solve for x
    x = 4,118,664,631.91/72,811.08
  6. Step 6: Final answer
    x = 56,566.45

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