Home / 87,857.70-131,785.37-21,298.41

Finding the Fourth Proportional to 87,857.70, 131,785.37 and 21,298.41

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Solution

The fourth proportional to 87,857.70, 131,785.37 and 21,298.41 is: 31,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.70 : 131,785.37 = 21,298.41 : x
  2. Step 2: Convert to fraction form
    87,857.70/131,785.37 = 21,298.41/x
  3. Step 3: Cross multiply
    87,857.70x = 131,785.37 × 21,298.41
  4. Step 4: Simplify right side
    87,857.70x = 2,806,818,842.26
  5. Step 5: Solve for x
    x = 2,806,818,842.26/87,857.70
  6. Step 6: Final answer
    x = 31,947.33

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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.