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Finding the Fourth Proportional to 70,930.68, 106,399.67 and 18,340.62

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Solution

The fourth proportional to 70,930.68, 106,399.67 and 18,340.62 is: 27,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.68 : 106,399.67 = 18,340.62 : x
  2. Step 2: Convert to fraction form
    70,930.68/106,399.67 = 18,340.62/x
  3. Step 3: Cross multiply
    70,930.68x = 106,399.67 × 18,340.62
  4. Step 4: Simplify right side
    70,930.68x = 1,951,435,915.60
  5. Step 5: Solve for x
    x = 1,951,435,915.60/70,930.68
  6. Step 6: Final answer
    x = 27,511.87

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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.