Home / 78,891.20-108,593.64-68,801.84

Finding the Fourth Proportional to 78,891.20, 108,593.64 and 68,801.84

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Solution

The fourth proportional to 78,891.20, 108,593.64 and 68,801.84 is: 94,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,891.20 : 108,593.64 = 68,801.84 : x
  2. Step 2: Convert to fraction form
    78,891.20/108,593.64 = 68,801.84/x
  3. Step 3: Cross multiply
    78,891.20x = 108,593.64 × 68,801.84
  4. Step 4: Simplify right side
    78,891.20x = 7,471,442,244.30
  5. Step 5: Solve for x
    x = 7,471,442,244.30/78,891.20
  6. Step 6: Final answer
    x = 94,705.65

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1.5x scale

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.