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Finding the Fourth Proportional to 73,198.47, 109,799.53 and 20,607.60

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Solution

The fourth proportional to 73,198.47, 109,799.53 and 20,607.60 is: 30,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,198.47 : 109,799.53 = 20,607.60 : x
  2. Step 2: Convert to fraction form
    73,198.47/109,799.53 = 20,607.60/x
  3. Step 3: Cross multiply
    73,198.47x = 109,799.53 × 20,607.60
  4. Step 4: Simplify right side
    73,198.47x = 2,262,705,231.94
  5. Step 5: Solve for x
    x = 2,262,705,231.94/73,198.47
  6. Step 6: Final answer
    x = 30,911.92

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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.