Home / 51,039.12-70,434-28,687.44

Finding the Fourth Proportional to 51,039.12, 70,434 and 28,687.44

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Solution

The fourth proportional to 51,039.12, 70,434 and 28,687.44 is: 39,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,039.12 : 70,434 = 28,687.44 : x
  2. Step 2: Convert to fraction form
    51,039.12/70,434 = 28,687.44/x
  3. Step 3: Cross multiply
    51,039.12x = 70,434 × 28,687.44
  4. Step 4: Simplify right side
    51,039.12x = 2,020,571,148.96
  5. Step 5: Solve for x
    x = 2,020,571,148.96/51,039.12
  6. Step 6: Final answer
    x = 39,588.68

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