Home / 85,819.11-118,388.26-74,472.67

Finding the Fourth Proportional to 85,819.11, 118,388.26 and 74,472.67

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Solution

The fourth proportional to 85,819.11, 118,388.26 and 74,472.67 is: 102,735.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,819.11 : 118,388.26 = 74,472.67 : x
  2. Step 2: Convert to fraction form
    85,819.11/118,388.26 = 74,472.67/x
  3. Step 3: Cross multiply
    85,819.11x = 118,388.26 × 74,472.67
  4. Step 4: Simplify right side
    85,819.11x = 8,816,689,818.85
  5. Step 5: Solve for x
    x = 8,816,689,818.85/85,819.11
  6. Step 6: Final answer
    x = 102,735.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.