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Finding the Fourth Proportional to 78,791.38, 118,188.10 and 26,200.86

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Solution

The fourth proportional to 78,791.38, 118,188.10 and 26,200.86 is: 39,301.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,791.38 : 118,188.10 = 26,200.86 : x
  2. Step 2: Convert to fraction form
    78,791.38/118,188.10 = 26,200.86/x
  3. Step 3: Cross multiply
    78,791.38x = 118,188.10 × 26,200.86
  4. Step 4: Simplify right side
    78,791.38x = 3,096,629,861.77
  5. Step 5: Solve for x
    x = 3,096,629,861.77/78,791.38
  6. Step 6: Final answer
    x = 39,301.63

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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.