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Finding the Fourth Proportional to 79,375.80, 119,068.26 and 28,785.84

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Solution

The fourth proportional to 79,375.80, 119,068.26 and 28,785.84 is: 43,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,375.80 : 119,068.26 = 28,785.84 : x
  2. Step 2: Convert to fraction form
    79,375.80/119,068.26 = 28,785.84/x
  3. Step 3: Cross multiply
    79,375.80x = 119,068.26 × 28,785.84
  4. Step 4: Simplify right side
    79,375.80x = 3,427,479,881.44
  5. Step 5: Solve for x
    x = 3,427,479,881.44/79,375.80
  6. Step 6: Final answer
    x = 43,180.41

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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.