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Finding the Fourth Proportional to 64,398.72, 96,604.22 and 20,013.52

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Solution

The fourth proportional to 64,398.72, 96,604.22 and 20,013.52 is: 30,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,398.72 : 96,604.22 = 20,013.52 : x
  2. Step 2: Convert to fraction form
    64,398.72/96,604.22 = 20,013.52/x
  3. Step 3: Cross multiply
    64,398.72x = 96,604.22 × 20,013.52
  4. Step 4: Simplify right side
    64,398.72x = 1,933,390,489.05
  5. Step 5: Solve for x
    x = 1,933,390,489.05/64,398.72
  6. Step 6: Final answer
    x = 30,022.19

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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.