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Finding the Fourth Proportional to 38,929, 53,722.08 and 22,162

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Solution

The fourth proportional to 38,929, 53,722.08 and 22,162 is: 30,583.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,929 : 53,722.08 = 22,162 : x
  2. Step 2: Convert to fraction form
    38,929/53,722.08 = 22,162/x
  3. Step 3: Cross multiply
    38,929x = 53,722.08 × 22,162
  4. Step 4: Simplify right side
    38,929x = 1,190,588,736.96
  5. Step 5: Solve for x
    x = 1,190,588,736.96/38,929
  6. Step 6: Final answer
    x = 30,583.59

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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.