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Finding the Fourth Proportional to 89,910.30, 134,865.45 and 63,644.70

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Solution

The fourth proportional to 89,910.30, 134,865.45 and 63,644.70 is: 95,467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,910.30 : 134,865.45 = 63,644.70 : x
  2. Step 2: Convert to fraction form
    89,910.30/134,865.45 = 63,644.70/x
  3. Step 3: Cross multiply
    89,910.30x = 134,865.45 × 63,644.70
  4. Step 4: Simplify right side
    89,910.30x = 8,583,471,105.62
  5. Step 5: Solve for x
    x = 8,583,471,105.62/89,910.30
  6. Step 6: Final answer
    x = 95,467.05

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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.