Home / 87,708.84-131,562.11-21,148.44

Finding the Fourth Proportional to 87,708.84, 131,562.11 and 21,148.44

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Solution

The fourth proportional to 87,708.84, 131,562.11 and 21,148.44 is: 31,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,708.84 : 131,562.11 = 21,148.44 : x
  2. Step 2: Convert to fraction form
    87,708.84/131,562.11 = 21,148.44/x
  3. Step 3: Cross multiply
    87,708.84x = 131,562.11 × 21,148.44
  4. Step 4: Simplify right side
    87,708.84x = 2,782,333,283.87
  5. Step 5: Solve for x
    x = 2,782,333,283.87/87,708.84
  6. Step 6: Final answer
    x = 31,722.38

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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.