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Finding the Fourth Proportional to 53,105.89, 79,651.15 and 15,664.11

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Solution

The fourth proportional to 53,105.89, 79,651.15 and 15,664.11 is: 23,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,105.89 : 79,651.15 = 15,664.11 : x
  2. Step 2: Convert to fraction form
    53,105.89/79,651.15 = 15,664.11/x
  3. Step 3: Cross multiply
    53,105.89x = 79,651.15 × 15,664.11
  4. Step 4: Simplify right side
    53,105.89x = 1,247,664,396.47
  5. Step 5: Solve for x
    x = 1,247,664,396.47/53,105.89
  6. Step 6: Final answer
    x = 23,493.90

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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.