Home / 78,279.11-108,035.34-43,836.95

Finding the Fourth Proportional to 78,279.11, 108,035.34 and 43,836.95

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Solution

The fourth proportional to 78,279.11, 108,035.34 and 43,836.95 is: 60,500.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,279.11 : 108,035.34 = 43,836.95 : x
  2. Step 2: Convert to fraction form
    78,279.11/108,035.34 = 43,836.95/x
  3. Step 3: Cross multiply
    78,279.11x = 108,035.34 × 43,836.95
  4. Step 4: Simplify right side
    78,279.11x = 4,735,939,797.81
  5. Step 5: Solve for x
    x = 4,735,939,797.81/78,279.11
  6. Step 6: Final answer
    x = 60,500.69

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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.