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Finding the Fourth Proportional to 79,639.40, 119,375.22 and 40,113.44

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Solution

The fourth proportional to 79,639.40, 119,375.22 and 40,113.44 is: 60,127.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,639.40 : 119,375.22 = 40,113.44 : x
  2. Step 2: Convert to fraction form
    79,639.40/119,375.22 = 40,113.44/x
  3. Step 3: Cross multiply
    79,639.40x = 119,375.22 × 40,113.44
  4. Step 4: Simplify right side
    79,639.40x = 4,788,550,724.96
  5. Step 5: Solve for x
    x = 4,788,550,724.96/79,639.40
  6. Step 6: Final answer
    x = 60,127.91

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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.