Home / 79,961.76-119,946.96-20,797.56

Finding the Fourth Proportional to 79,961.76, 119,946.96 and 20,797.56

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Solution

The fourth proportional to 79,961.76, 119,946.96 and 20,797.56 is: 31,197.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,961.76 : 119,946.96 = 20,797.56 : x
  2. Step 2: Convert to fraction form
    79,961.76/119,946.96 = 20,797.56/x
  3. Step 3: Cross multiply
    79,961.76x = 119,946.96 × 20,797.56
  4. Step 4: Simplify right side
    79,961.76x = 2,494,604,097.42
  5. Step 5: Solve for x
    x = 2,494,604,097.42/79,961.76
  6. Step 6: Final answer
    x = 31,197.46

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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.