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Finding the Fourth Proportional to 69,162.20, 103,726.92 and 31,698.92

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Solution

The fourth proportional to 69,162.20, 103,726.92 and 31,698.92 is: 47,540.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,162.20 : 103,726.92 = 31,698.92 : x
  2. Step 2: Convert to fraction form
    69,162.20/103,726.92 = 31,698.92/x
  3. Step 3: Cross multiply
    69,162.20x = 103,726.92 × 31,698.92
  4. Step 4: Simplify right side
    69,162.20x = 3,288,031,338.93
  5. Step 5: Solve for x
    x = 3,288,031,338.93/69,162.20
  6. Step 6: Final answer
    x = 47,540.87

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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.