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Finding the Fourth Proportional to 39,573.74, 54,611.73 and 21,668.73

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Solution

The fourth proportional to 39,573.74, 54,611.73 and 21,668.73 is: 29,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,573.74 : 54,611.73 = 21,668.73 : x
  2. Step 2: Convert to fraction form
    39,573.74/54,611.73 = 21,668.73/x
  3. Step 3: Cross multiply
    39,573.74x = 54,611.73 × 21,668.73
  4. Step 4: Simplify right side
    39,573.74x = 1,183,366,832.20
  5. Step 5: Solve for x
    x = 1,183,366,832.20/39,573.74
  6. Step 6: Final answer
    x = 29,902.83

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1.5x scale

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.