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Finding the Fourth Proportional to 69,012.94, 103,519.47 and 21,631.73

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Solution

The fourth proportional to 69,012.94, 103,519.47 and 21,631.73 is: 32,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,012.94 : 103,519.47 = 21,631.73 : x
  2. Step 2: Convert to fraction form
    69,012.94/103,519.47 = 21,631.73/x
  3. Step 3: Cross multiply
    69,012.94x = 103,519.47 × 21,631.73
  4. Step 4: Simplify right side
    69,012.94x = 2,239,305,540.07
  5. Step 5: Solve for x
    x = 2,239,305,540.07/69,012.94
  6. Step 6: Final answer
    x = 32,447.62

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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.