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Finding the Fourth Proportional to 72,634.72, 108,958.35 and 20,044.20

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Solution

The fourth proportional to 72,634.72, 108,958.35 and 20,044.20 is: 30,068.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,634.72 : 108,958.35 = 20,044.20 : x
  2. Step 2: Convert to fraction form
    72,634.72/108,958.35 = 20,044.20/x
  3. Step 3: Cross multiply
    72,634.72x = 108,958.35 × 20,044.20
  4. Step 4: Simplify right side
    72,634.72x = 2,183,982,959.07
  5. Step 5: Solve for x
    x = 2,183,982,959.07/72,634.72
  6. Step 6: Final answer
    x = 30,068.03

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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.