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Finding the Fourth Proportional to 87,390.32, 120,608.90 and 49,670.24

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Solution

The fourth proportional to 87,390.32, 120,608.90 and 49,670.24 is: 68,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,390.32 : 120,608.90 = 49,670.24 : x
  2. Step 2: Convert to fraction form
    87,390.32/120,608.90 = 49,670.24/x
  3. Step 3: Cross multiply
    87,390.32x = 120,608.90 × 49,670.24
  4. Step 4: Simplify right side
    87,390.32x = 5,990,673,009.14
  5. Step 5: Solve for x
    x = 5,990,673,009.14/87,390.32
  6. Step 6: Final answer
    x = 68,550.76

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