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Finding the Fourth Proportional to 79,882.77, 110,704.23 and 78,755.25

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Solution

The fourth proportional to 79,882.77, 110,704.23 and 78,755.25 is: 109,141.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,882.77 : 110,704.23 = 78,755.25 : x
  2. Step 2: Convert to fraction form
    79,882.77/110,704.23 = 78,755.25/x
  3. Step 3: Cross multiply
    79,882.77x = 110,704.23 × 78,755.25
  4. Step 4: Simplify right side
    79,882.77x = 8,718,539,309.71
  5. Step 5: Solve for x
    x = 8,718,539,309.71/79,882.77
  6. Step 6: Final answer
    x = 109,141.67

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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.