Home / 81,096.39-121,644.18-21,931.97

Finding the Fourth Proportional to 81,096.39, 121,644.18 and 21,931.97

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Solution

The fourth proportional to 81,096.39, 121,644.18 and 21,931.97 is: 32,897.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,096.39 : 121,644.18 = 21,931.97 : x
  2. Step 2: Convert to fraction form
    81,096.39/121,644.18 = 21,931.97/x
  3. Step 3: Cross multiply
    81,096.39x = 121,644.18 × 21,931.97
  4. Step 4: Simplify right side
    81,096.39x = 2,667,895,898.21
  5. Step 5: Solve for x
    x = 2,667,895,898.21/81,096.39
  6. Step 6: Final answer
    x = 32,897.84

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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.