Home / 67,121.81-100,682.25-22,779.78

Finding the Fourth Proportional to 67,121.81, 100,682.25 and 22,779.78

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Solution

The fourth proportional to 67,121.81, 100,682.25 and 22,779.78 is: 34,169.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,121.81 : 100,682.25 = 22,779.78 : x
  2. Step 2: Convert to fraction form
    67,121.81/100,682.25 = 22,779.78/x
  3. Step 3: Cross multiply
    67,121.81x = 100,682.25 × 22,779.78
  4. Step 4: Simplify right side
    67,121.81x = 2,293,519,504.91
  5. Step 5: Solve for x
    x = 2,293,519,504.91/67,121.81
  6. Step 6: Final answer
    x = 34,169.51

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1.5x scale

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.