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Finding the Fourth Proportional to 54,310.70, 81,466.05 and 39,449.90

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Solution

The fourth proportional to 54,310.70, 81,466.05 and 39,449.90 is: 59,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,310.70 : 81,466.05 = 39,449.90 : x
  2. Step 2: Convert to fraction form
    54,310.70/81,466.05 = 39,449.90/x
  3. Step 3: Cross multiply
    54,310.70x = 81,466.05 × 39,449.90
  4. Step 4: Simplify right side
    54,310.70x = 3,213,827,525.90
  5. Step 5: Solve for x
    x = 3,213,827,525.90/54,310.70
  6. Step 6: Final answer
    x = 59,174.85

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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.