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Finding the Fourth Proportional to 99,704.63, 137,592.39 and 54,992.63

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Solution

The fourth proportional to 99,704.63, 137,592.39 and 54,992.63 is: 75,889.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,704.63 : 137,592.39 = 54,992.63 : x
  2. Step 2: Convert to fraction form
    99,704.63/137,592.39 = 54,992.63/x
  3. Step 3: Cross multiply
    99,704.63x = 137,592.39 × 54,992.63
  4. Step 4: Simplify right side
    99,704.63x = 7,566,566,706.12
  5. Step 5: Solve for x
    x = 7,566,566,706.12/99,704.63
  6. Step 6: Final answer
    x = 75,889.83

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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.