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Finding the Fourth Proportional to 67,299.84, 100,950.12 and 20,553.12

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Solution

The fourth proportional to 67,299.84, 100,950.12 and 20,553.12 is: 30,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,299.84 : 100,950.12 = 20,553.12 : x
  2. Step 2: Convert to fraction form
    67,299.84/100,950.12 = 20,553.12/x
  3. Step 3: Cross multiply
    67,299.84x = 100,950.12 × 20,553.12
  4. Step 4: Simplify right side
    67,299.84x = 2,074,839,930.37
  5. Step 5: Solve for x
    x = 2,074,839,930.37/67,299.84
  6. Step 6: Final answer
    x = 30,829.79

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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.