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Finding the Fourth Proportional to 71,873.42, 107,764.94 and 21,936.92

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Solution

The fourth proportional to 71,873.42, 107,764.94 and 21,936.92 is: 32,891.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,873.42 : 107,764.94 = 21,936.92 : x
  2. Step 2: Convert to fraction form
    71,873.42/107,764.94 = 21,936.92/x
  3. Step 3: Cross multiply
    71,873.42x = 107,764.94 × 21,936.92
  4. Step 4: Simplify right side
    71,873.42x = 2,364,030,867.58
  5. Step 5: Solve for x
    x = 2,364,030,867.58/71,873.42
  6. Step 6: Final answer
    x = 32,891.59

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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.