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Finding the Fourth Proportional to 57,042.99, 85,564.17 and 15,489.99

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Solution

The fourth proportional to 57,042.99, 85,564.17 and 15,489.99 is: 23,234.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,042.99 : 85,564.17 = 15,489.99 : x
  2. Step 2: Convert to fraction form
    57,042.99/85,564.17 = 15,489.99/x
  3. Step 3: Cross multiply
    57,042.99x = 85,564.17 × 15,489.99
  4. Step 4: Simplify right side
    57,042.99x = 1,325,388,137.66
  5. Step 5: Solve for x
    x = 1,325,388,137.66/57,042.99
  6. Step 6: Final answer
    x = 23,234.90

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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.