Home / 57,949.92-86,872.32-21,005.28

Finding the Fourth Proportional to 57,949.92, 86,872.32 and 21,005.28

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Solution

The fourth proportional to 57,949.92, 86,872.32 and 21,005.28 is: 31,488.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,949.92 : 86,872.32 = 21,005.28 : x
  2. Step 2: Convert to fraction form
    57,949.92/86,872.32 = 21,005.28/x
  3. Step 3: Cross multiply
    57,949.92x = 86,872.32 × 21,005.28
  4. Step 4: Simplify right side
    57,949.92x = 1,824,777,405.85
  5. Step 5: Solve for x
    x = 1,824,777,405.85/57,949.92
  6. Step 6: Final answer
    x = 31,488.87

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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.