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Finding the Fourth Proportional to 70,846.08, 106,249.56 and 20,920.92

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Solution

The fourth proportional to 70,846.08, 106,249.56 and 20,920.92 is: 31,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,846.08 : 106,249.56 = 20,920.92 : x
  2. Step 2: Convert to fraction form
    70,846.08/106,249.56 = 20,920.92/x
  3. Step 3: Cross multiply
    70,846.08x = 106,249.56 × 20,920.92
  4. Step 4: Simplify right side
    70,846.08x = 2,222,838,544.80
  5. Step 5: Solve for x
    x = 2,222,838,544.80/70,846.08
  6. Step 6: Final answer
    x = 31,375.60

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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.