Home / 83,467.88-125,206.38-21,138.92

Finding the Fourth Proportional to 83,467.88, 125,206.38 and 21,138.92

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Solution

The fourth proportional to 83,467.88, 125,206.38 and 21,138.92 is: 31,709.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,467.88 : 125,206.38 = 21,138.92 : x
  2. Step 2: Convert to fraction form
    83,467.88/125,206.38 = 21,138.92/x
  3. Step 3: Cross multiply
    83,467.88x = 125,206.38 × 21,138.92
  4. Step 4: Simplify right side
    83,467.88x = 2,646,727,650.31
  5. Step 5: Solve for x
    x = 2,646,727,650.31/83,467.88
  6. Step 6: Final answer
    x = 31,709.53

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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.