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Finding the Fourth Proportional to 79,883.15, 110,704.76 and 78,755.63

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Solution

The fourth proportional to 79,883.15, 110,704.76 and 78,755.63 is: 109,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,883.15 : 110,704.76 = 78,755.63 : x
  2. Step 2: Convert to fraction form
    79,883.15/110,704.76 = 78,755.63/x
  3. Step 3: Cross multiply
    79,883.15x = 110,704.76 × 78,755.63
  4. Step 4: Simplify right side
    79,883.15x = 8,718,622,465.83
  5. Step 5: Solve for x
    x = 8,718,622,465.83/79,883.15
  6. Step 6: Final answer
    x = 109,142.20

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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.