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Finding the Fourth Proportional to 99,644.70, 137,431.92 and 63,838.04

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Solution

The fourth proportional to 99,644.70, 137,431.92 and 63,838.04 is: 88,046.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,644.70 : 137,431.92 = 63,838.04 : x
  2. Step 2: Convert to fraction form
    99,644.70/137,431.92 = 63,838.04/x
  3. Step 3: Cross multiply
    99,644.70x = 137,431.92 × 63,838.04
  4. Step 4: Simplify right side
    99,644.70x = 8,773,384,406.24
  5. Step 5: Solve for x
    x = 8,773,384,406.24/99,644.70
  6. Step 6: Final answer
    x = 88,046.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.