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Finding the Fourth Proportional to 66,993.50, 100,358.87 and 38,854.46

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Solution

The fourth proportional to 66,993.50, 100,358.87 and 38,854.46 is: 58,205.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,993.50 : 100,358.87 = 38,854.46 : x
  2. Step 2: Convert to fraction form
    66,993.50/100,358.87 = 38,854.46/x
  3. Step 3: Cross multiply
    66,993.50x = 100,358.87 × 38,854.46
  4. Step 4: Simplify right side
    66,993.50x = 3,899,389,295.40
  5. Step 5: Solve for x
    x = 3,899,389,295.40/66,993.50
  6. Step 6: Final answer
    x = 58,205.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.