Home / 51,439.85-77,151.82-19,845.30

Finding the Fourth Proportional to 51,439.85, 77,151.82 and 19,845.30

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Solution

The fourth proportional to 51,439.85, 77,151.82 and 19,845.30 is: 29,764.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,439.85 : 77,151.82 = 19,845.30 : x
  2. Step 2: Convert to fraction form
    51,439.85/77,151.82 = 19,845.30/x
  3. Step 3: Cross multiply
    51,439.85x = 77,151.82 × 19,845.30
  4. Step 4: Simplify right side
    51,439.85x = 1,531,101,234.55
  5. Step 5: Solve for x
    x = 1,531,101,234.55/51,439.85
  6. Step 6: Final answer
    x = 29,764.88

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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.