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Finding the Fourth Proportional to 51,138.63, 70,570.00 and 49,629.60

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Solution

The fourth proportional to 51,138.63, 70,570.00 and 49,629.60 is: 68,487.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,138.63 : 70,570.00 = 49,629.60 : x
  2. Step 2: Convert to fraction form
    51,138.63/70,570.00 = 49,629.60/x
  3. Step 3: Cross multiply
    51,138.63x = 70,570.00 × 49,629.60
  4. Step 4: Simplify right side
    51,138.63x = 3,502,360,623.85
  5. Step 5: Solve for x
    x = 3,502,360,623.85/51,138.63
  6. Step 6: Final answer
    x = 68,487.57

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