Home / 31,474.20-47,211.30-30,107.54

Finding the Fourth Proportional to 31,474.20, 47,211.30 and 30,107.54

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Solution

The fourth proportional to 31,474.20, 47,211.30 and 30,107.54 is: 45,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.20 : 47,211.30 = 30,107.54 : x
  2. Step 2: Convert to fraction form
    31,474.20/47,211.30 = 30,107.54/x
  3. Step 3: Cross multiply
    31,474.20x = 47,211.30 × 30,107.54
  4. Step 4: Simplify right side
    31,474.20x = 1,421,415,867.15
  5. Step 5: Solve for x
    x = 1,421,415,867.15/31,474.20
  6. Step 6: Final answer
    x = 45,161.30

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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.