Home / 49,431.52-74,147.42-11,991.43

Finding the Fourth Proportional to 49,431.52, 74,147.42 and 11,991.43

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Solution

The fourth proportional to 49,431.52, 74,147.42 and 11,991.43 is: 17,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,431.52 : 74,147.42 = 11,991.43 : x
  2. Step 2: Convert to fraction form
    49,431.52/74,147.42 = 11,991.43/x
  3. Step 3: Cross multiply
    49,431.52x = 74,147.42 × 11,991.43
  4. Step 4: Simplify right side
    49,431.52x = 889,133,596.61
  5. Step 5: Solve for x
    x = 889,133,596.61/49,431.52
  6. Step 6: Final answer
    x = 17,987.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.