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Finding the Fourth Proportional to 89,311.88, 123,245.94 and 51,583.88

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Solution

The fourth proportional to 89,311.88, 123,245.94 and 51,583.88 is: 71,183.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,311.88 : 123,245.94 = 51,583.88 : x
  2. Step 2: Convert to fraction form
    89,311.88/123,245.94 = 51,583.88/x
  3. Step 3: Cross multiply
    89,311.88x = 123,245.94 × 51,583.88
  4. Step 4: Simplify right side
    89,311.88x = 6,357,503,779.45
  5. Step 5: Solve for x
    x = 6,357,503,779.45/89,311.88
  6. Step 6: Final answer
    x = 71,183.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.