Home / 72,329.30-108,511.26-30,185.91

Finding the Fourth Proportional to 72,329.30, 108,511.26 and 30,185.91

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Solution

The fourth proportional to 72,329.30, 108,511.26 and 30,185.91 is: 45,286.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,329.30 : 108,511.26 = 30,185.91 : x
  2. Step 2: Convert to fraction form
    72,329.30/108,511.26 = 30,185.91/x
  3. Step 3: Cross multiply
    72,329.30x = 108,511.26 × 30,185.91
  4. Step 4: Simplify right side
    72,329.30x = 3,275,511,128.35
  5. Step 5: Solve for x
    x = 3,275,511,128.35/72,329.30
  6. Step 6: Final answer
    x = 45,286.09

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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.