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Finding the Fourth Proportional to 78,119.64, 117,198.90 and 44,861.04

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Solution

The fourth proportional to 78,119.64, 117,198.90 and 44,861.04 is: 67,302.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,119.64 : 117,198.90 = 44,861.04 : x
  2. Step 2: Convert to fraction form
    78,119.64/117,198.90 = 44,861.04/x
  3. Step 3: Cross multiply
    78,119.64x = 117,198.90 × 44,861.04
  4. Step 4: Simplify right side
    78,119.64x = 5,257,664,540.86
  5. Step 5: Solve for x
    x = 5,257,664,540.86/78,119.64
  6. Step 6: Final answer
    x = 67,302.72

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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.