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Finding the Fourth Proportional to 67,224.57, 100,836.78 and 20,477.44

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Solution

The fourth proportional to 67,224.57, 100,836.78 and 20,477.44 is: 30,716.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,224.57 : 100,836.78 = 20,477.44 : x
  2. Step 2: Convert to fraction form
    67,224.57/100,836.78 = 20,477.44/x
  3. Step 3: Cross multiply
    67,224.57x = 100,836.78 × 20,477.44
  4. Step 4: Simplify right side
    67,224.57x = 2,064,879,112.24
  5. Step 5: Solve for x
    x = 2,064,879,112.24/67,224.57
  6. Step 6: Final answer
    x = 30,716.14

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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.