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Finding the Fourth Proportional to 67,226.80, 100,829.40 and 20,468.80

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Solution

The fourth proportional to 67,226.80, 100,829.40 and 20,468.80 is: 30,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,226.80 : 100,829.40 = 20,468.80 : x
  2. Step 2: Convert to fraction form
    67,226.80/100,829.40 = 20,468.80/x
  3. Step 3: Cross multiply
    67,226.80x = 100,829.40 × 20,468.80
  4. Step 4: Simplify right side
    67,226.80x = 2,063,856,822.72
  5. Step 5: Solve for x
    x = 2,063,856,822.72/67,226.80
  6. Step 6: Final answer
    x = 30,699.91

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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.