Home / 68,614.20-102,719.70-51,161.40

Finding the Fourth Proportional to 68,614.20, 102,719.70 and 51,161.40

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Solution

The fourth proportional to 68,614.20, 102,719.70 and 51,161.40 is: 76,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,614.20 : 102,719.70 = 51,161.40 : x
  2. Step 2: Convert to fraction form
    68,614.20/102,719.70 = 51,161.40/x
  3. Step 3: Cross multiply
    68,614.20x = 102,719.70 × 51,161.40
  4. Step 4: Simplify right side
    68,614.20x = 5,255,283,659.58
  5. Step 5: Solve for x
    x = 5,255,283,659.58/68,614.20
  6. Step 6: Final answer
    x = 76,591.78

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1.5x scale

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.