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Finding the Fourth Proportional to 36,472.98, 54,709.48 and 18,905.91

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Solution

The fourth proportional to 36,472.98, 54,709.48 and 18,905.91 is: 28,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,472.98 : 54,709.48 = 18,905.91 : x
  2. Step 2: Convert to fraction form
    36,472.98/54,709.48 = 18,905.91/x
  3. Step 3: Cross multiply
    36,472.98x = 54,709.48 × 18,905.91
  4. Step 4: Simplify right side
    36,472.98x = 1,034,332,217.15
  5. Step 5: Solve for x
    x = 1,034,332,217.15/36,472.98
  6. Step 6: Final answer
    x = 28,358.86

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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.