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Finding the Fourth Proportional to 79,996.62, 119,993.31 and 20,830.98

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Solution

The fourth proportional to 79,996.62, 119,993.31 and 20,830.98 is: 31,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,996.62 : 119,993.31 = 20,830.98 : x
  2. Step 2: Convert to fraction form
    79,996.62/119,993.31 = 20,830.98/x
  3. Step 3: Cross multiply
    79,996.62x = 119,993.31 × 20,830.98
  4. Step 4: Simplify right side
    79,996.62x = 2,499,578,240.74
  5. Step 5: Solve for x
    x = 2,499,578,240.74/79,996.62
  6. Step 6: Final answer
    x = 31,246.05

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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.