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Finding the Fourth Proportional to 69,358.62, 103,994.19 and 38,215.74

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Solution

The fourth proportional to 69,358.62, 103,994.19 and 38,215.74 is: 57,299.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,358.62 : 103,994.19 = 38,215.74 : x
  2. Step 2: Convert to fraction form
    69,358.62/103,994.19 = 38,215.74/x
  3. Step 3: Cross multiply
    69,358.62x = 103,994.19 × 38,215.74
  4. Step 4: Simplify right side
    69,358.62x = 3,974,214,926.55
  5. Step 5: Solve for x
    x = 3,974,214,926.55/69,358.62
  6. Step 6: Final answer
    x = 57,299.51

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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.