Home / 81,942.78-122,939.70-29,352.72

Finding the Fourth Proportional to 81,942.78, 122,939.70 and 29,352.72

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Solution

The fourth proportional to 81,942.78, 122,939.70 and 29,352.72 is: 44,038.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,942.78 : 122,939.70 = 29,352.72 : x
  2. Step 2: Convert to fraction form
    81,942.78/122,939.70 = 29,352.72/x
  3. Step 3: Cross multiply
    81,942.78x = 122,939.70 × 29,352.72
  4. Step 4: Simplify right side
    81,942.78x = 3,608,614,590.98
  5. Step 5: Solve for x
    x = 3,608,614,590.98/81,942.78
  6. Step 6: Final answer
    x = 44,038.23

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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.