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Finding the Fourth Proportional to 80,850.96, 110,766.21 and 77,820.71

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Solution

The fourth proportional to 80,850.96, 110,766.21 and 77,820.71 is: 106,614.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,850.96 : 110,766.21 = 77,820.71 : x
  2. Step 2: Convert to fraction form
    80,850.96/110,766.21 = 77,820.71/x
  3. Step 3: Cross multiply
    80,850.96x = 110,766.21 × 77,820.71
  4. Step 4: Simplify right side
    80,850.96x = 8,619,905,165.59
  5. Step 5: Solve for x
    x = 8,619,905,165.59/80,850.96
  6. Step 6: Final answer
    x = 106,614.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.