Home / 87,857.83-131,785.56-21,298.53

Finding the Fourth Proportional to 87,857.83, 131,785.56 and 21,298.53

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Solution

The fourth proportional to 87,857.83, 131,785.56 and 21,298.53 is: 31,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.83 : 131,785.56 = 21,298.53 : x
  2. Step 2: Convert to fraction form
    87,857.83/131,785.56 = 21,298.53/x
  3. Step 3: Cross multiply
    87,857.83x = 131,785.56 × 21,298.53
  4. Step 4: Simplify right side
    87,857.83x = 2,806,838,703.23
  5. Step 5: Solve for x
    x = 2,806,838,703.23/87,857.83
  6. Step 6: Final answer
    x = 31,947.51

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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.