Home / 30,040.70-45,063.46-8,979.20

Finding the Fourth Proportional to 30,040.70, 45,063.46 and 8,979.20

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Solution

The fourth proportional to 30,040.70, 45,063.46 and 8,979.20 is: 13,469.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,040.70 : 45,063.46 = 8,979.20 : x
  2. Step 2: Convert to fraction form
    30,040.70/45,063.46 = 8,979.20/x
  3. Step 3: Cross multiply
    30,040.70x = 45,063.46 × 8,979.20
  4. Step 4: Simplify right side
    30,040.70x = 404,633,820.03
  5. Step 5: Solve for x
    x = 404,633,820.03/30,040.70
  6. Step 6: Final answer
    x = 13,469.52

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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.