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Finding the Fourth Proportional to 30,559.87, 45,836.16 and 8,375.19

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Solution

The fourth proportional to 30,559.87, 45,836.16 and 8,375.19 is: 12,561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,559.87 : 45,836.16 = 8,375.19 : x
  2. Step 2: Convert to fraction form
    30,559.87/45,836.16 = 8,375.19/x
  3. Step 3: Cross multiply
    30,559.87x = 45,836.16 × 8,375.19
  4. Step 4: Simplify right side
    30,559.87x = 383,886,548.87
  5. Step 5: Solve for x
    x = 383,886,548.87/30,559.87
  6. Step 6: Final answer
    x = 12,561.79

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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.