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Finding the Fourth Proportional to 80,374.74, 120,508.92 and 35,940.30

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Solution

The fourth proportional to 80,374.74, 120,508.92 and 35,940.30 is: 53,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,374.74 : 120,508.92 = 35,940.30 : x
  2. Step 2: Convert to fraction form
    80,374.74/120,508.92 = 35,940.30/x
  3. Step 3: Cross multiply
    80,374.74x = 120,508.92 × 35,940.30
  4. Step 4: Simplify right side
    80,374.74x = 4,331,126,737.48
  5. Step 5: Solve for x
    x = 4,331,126,737.48/80,374.74
  6. Step 6: Final answer
    x = 53,886.67

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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.