Home / 31,861.08-47,651.76-28,375.56

Finding the Fourth Proportional to 31,861.08, 47,651.76 and 28,375.56

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Solution

The fourth proportional to 31,861.08, 47,651.76 and 28,375.56 is: 42,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,861.08 : 47,651.76 = 28,375.56 : x
  2. Step 2: Convert to fraction form
    31,861.08/47,651.76 = 28,375.56/x
  3. Step 3: Cross multiply
    31,861.08x = 47,651.76 × 28,375.56
  4. Step 4: Simplify right side
    31,861.08x = 1,352,145,374.99
  5. Step 5: Solve for x
    x = 1,352,145,374.99/31,861.08
  6. Step 6: Final answer
    x = 42,438.78

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1.5x scale

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.