Home / 87,939.46-131,907.98-21,379.38

Finding the Fourth Proportional to 87,939.46, 131,907.98 and 21,379.38

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Solution

The fourth proportional to 87,939.46, 131,907.98 and 21,379.38 is: 32,068.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,939.46 : 131,907.98 = 21,379.38 : x
  2. Step 2: Convert to fraction form
    87,939.46/131,907.98 = 21,379.38/x
  3. Step 3: Cross multiply
    87,939.46x = 131,907.98 × 21,379.38
  4. Step 4: Simplify right side
    87,939.46x = 2,820,110,829.45
  5. Step 5: Solve for x
    x = 2,820,110,829.45/87,939.46
  6. Step 6: Final answer
    x = 32,068.78

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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.