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Finding the Fourth Proportional to 67,022.56, 100,543.56 and 20,279.44

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Solution

The fourth proportional to 67,022.56, 100,543.56 and 20,279.44 is: 30,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,022.56 : 100,543.56 = 20,279.44 : x
  2. Step 2: Convert to fraction form
    67,022.56/100,543.56 = 20,279.44/x
  3. Step 3: Cross multiply
    67,022.56x = 100,543.56 × 20,279.44
  4. Step 4: Simplify right side
    67,022.56x = 2,038,967,092.41
  5. Step 5: Solve for x
    x = 2,038,967,092.41/67,022.56
  6. Step 6: Final answer
    x = 30,422.10

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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.