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Finding the Fourth Proportional to 79,883.27, 110,704.93 and 78,755.75

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Solution

The fourth proportional to 79,883.27, 110,704.93 and 78,755.75 is: 109,142.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,883.27 : 110,704.93 = 78,755.75 : x
  2. Step 2: Convert to fraction form
    79,883.27/110,704.93 = 78,755.75/x
  3. Step 3: Cross multiply
    79,883.27x = 110,704.93 × 78,755.75
  4. Step 4: Simplify right side
    79,883.27x = 8,718,649,397.07
  5. Step 5: Solve for x
    x = 8,718,649,397.07/79,883.27
  6. Step 6: Final answer
    x = 109,142.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.