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Finding the Fourth Proportional to 54,919.98, 82,396.38 and 38,940.30

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Solution

The fourth proportional to 54,919.98, 82,396.38 and 38,940.30 is: 58,422.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,919.98 : 82,396.38 = 38,940.30 : x
  2. Step 2: Convert to fraction form
    54,919.98/82,396.38 = 38,940.30/x
  3. Step 3: Cross multiply
    54,919.98x = 82,396.38 × 38,940.30
  4. Step 4: Simplify right side
    54,919.98x = 3,208,539,756.11
  5. Step 5: Solve for x
    x = 3,208,539,756.11/54,919.98
  6. Step 6: Final answer
    x = 58,422.09

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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.