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Finding the Fourth Proportional to 70,198.58, 96,874.02 and 39,986.70

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Solution

The fourth proportional to 70,198.58, 96,874.02 and 39,986.70 is: 55,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,198.58 : 96,874.02 = 39,986.70 : x
  2. Step 2: Convert to fraction form
    70,198.58/96,874.02 = 39,986.70/x
  3. Step 3: Cross multiply
    70,198.58x = 96,874.02 × 39,986.70
  4. Step 4: Simplify right side
    70,198.58x = 3,873,672,375.53
  5. Step 5: Solve for x
    x = 3,873,672,375.53/70,198.58
  6. Step 6: Final answer
    x = 55,181.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.