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Finding the Fourth Proportional to 83,855.32, 125,782.98 and 21,525.82

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Solution

The fourth proportional to 83,855.32, 125,782.98 and 21,525.82 is: 32,288.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,855.32 : 125,782.98 = 21,525.82 : x
  2. Step 2: Convert to fraction form
    83,855.32/125,782.98 = 21,525.82/x
  3. Step 3: Cross multiply
    83,855.32x = 125,782.98 × 21,525.82
  4. Step 4: Simplify right side
    83,855.32x = 2,707,581,786.54
  5. Step 5: Solve for x
    x = 2,707,581,786.54/83,855.32
  6. Step 6: Final answer
    x = 32,288.73

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1.5x scale

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.