Home / 49,419.11-74,128.82-11,979.04

Finding the Fourth Proportional to 49,419.11, 74,128.82 and 11,979.04

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Solution

The fourth proportional to 49,419.11, 74,128.82 and 11,979.04 is: 17,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,419.11 : 74,128.82 = 11,979.04 : x
  2. Step 2: Convert to fraction form
    49,419.11/74,128.82 = 11,979.04/x
  3. Step 3: Cross multiply
    49,419.11x = 74,128.82 × 11,979.04
  4. Step 4: Simplify right side
    49,419.11x = 887,992,099.93
  5. Step 5: Solve for x
    x = 887,992,099.93/49,419.11
  6. Step 6: Final answer
    x = 17,968.60

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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.