Home / 67,020.15-100,366.20-31,918.80

Finding the Fourth Proportional to 67,020.15, 100,366.20 and 31,918.80

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Solution

The fourth proportional to 67,020.15, 100,366.20 and 31,918.80 is: 47,800.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,020.15 : 100,366.20 = 31,918.80 : x
  2. Step 2: Convert to fraction form
    67,020.15/100,366.20 = 31,918.80/x
  3. Step 3: Cross multiply
    67,020.15x = 100,366.20 × 31,918.80
  4. Step 4: Simplify right side
    67,020.15x = 3,203,568,664.56
  5. Step 5: Solve for x
    x = 3,203,568,664.56/67,020.15
  6. Step 6: Final answer
    x = 47,800.08

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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.