Home / 78,826.92-108,794.66-75,283.88

Finding the Fourth Proportional to 78,826.92, 108,794.66 and 75,283.88

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Solution

The fourth proportional to 78,826.92, 108,794.66 and 75,283.88 is: 103,904.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,826.92 : 108,794.66 = 75,283.88 : x
  2. Step 2: Convert to fraction form
    78,826.92/108,794.66 = 75,283.88/x
  3. Step 3: Cross multiply
    78,826.92x = 108,794.66 × 75,283.88
  4. Step 4: Simplify right side
    78,826.92x = 8,190,484,128.08
  5. Step 5: Solve for x
    x = 8,190,484,128.08/78,826.92
  6. Step 6: Final answer
    x = 103,904.66

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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.