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Finding the Fourth Proportional to 79,977, 119,920.83 and 50,331.30

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Solution

The fourth proportional to 79,977, 119,920.83 and 50,331.30 is: 75,468.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,977 : 119,920.83 = 50,331.30 : x
  2. Step 2: Convert to fraction form
    79,977/119,920.83 = 50,331.30/x
  3. Step 3: Cross multiply
    79,977x = 119,920.83 × 50,331.30
  4. Step 4: Simplify right side
    79,977x = 6,035,771,270.98
  5. Step 5: Solve for x
    x = 6,035,771,270.98/79,977
  6. Step 6: Final answer
    x = 75,468.84

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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.