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Finding the Fourth Proportional to 67,299.84, 92,843.46 and 38,990.34

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Solution

The fourth proportional to 67,299.84, 92,843.46 and 38,990.34 is: 53,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,299.84 : 92,843.46 = 38,990.34 : x
  2. Step 2: Convert to fraction form
    67,299.84/92,843.46 = 38,990.34/x
  3. Step 3: Cross multiply
    67,299.84x = 92,843.46 × 38,990.34
  4. Step 4: Simplify right side
    67,299.84x = 3,619,998,072.18
  5. Step 5: Solve for x
    x = 3,619,998,072.18/67,299.84
  6. Step 6: Final answer
    x = 53,789.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.