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Finding the Fourth Proportional to 67,120.81, 100,680.76 and 22,778.78

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Solution

The fourth proportional to 67,120.81, 100,680.76 and 22,778.78 is: 34,168.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,120.81 : 100,680.76 = 22,778.78 : x
  2. Step 2: Convert to fraction form
    67,120.81/100,680.76 = 22,778.78/x
  3. Step 3: Cross multiply
    67,120.81x = 100,680.76 × 22,778.78
  4. Step 4: Simplify right side
    67,120.81x = 2,293,384,264.98
  5. Step 5: Solve for x
    x = 2,293,384,264.98/67,120.81
  6. Step 6: Final answer
    x = 34,168.01

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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.