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Finding the Fourth Proportional to 67,364.40, 100,850.79 and 39,198.60

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Solution

The fourth proportional to 67,364.40, 100,850.79 and 39,198.60 is: 58,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,364.40 : 100,850.79 = 39,198.60 : x
  2. Step 2: Convert to fraction form
    67,364.40/100,850.79 = 39,198.60/x
  3. Step 3: Cross multiply
    67,364.40x = 100,850.79 × 39,198.60
  4. Step 4: Simplify right side
    67,364.40x = 3,953,209,776.89
  5. Step 5: Solve for x
    x = 3,953,209,776.89/67,364.40
  6. Step 6: Final answer
    x = 58,683.96

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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.