Home / 31,311.65-43,216.45-28,789.77

Finding the Fourth Proportional to 31,311.65, 43,216.45 and 28,789.77

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Solution

The fourth proportional to 31,311.65, 43,216.45 and 28,789.77 is: 39,735.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,311.65 : 43,216.45 = 28,789.77 : x
  2. Step 2: Convert to fraction form
    31,311.65/43,216.45 = 28,789.77/x
  3. Step 3: Cross multiply
    31,311.65x = 43,216.45 × 28,789.77
  4. Step 4: Simplify right side
    31,311.65x = 1,244,191,421.68
  5. Step 5: Solve for x
    x = 1,244,191,421.68/31,311.65
  6. Step 6: Final answer
    x = 39,735.73

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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.