Home / 68,660.20-102,788.70-51,207.40

Finding the Fourth Proportional to 68,660.20, 102,788.70 and 51,207.40

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Solution

The fourth proportional to 68,660.20, 102,788.70 and 51,207.40 is: 76,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,660.20 : 102,788.70 = 51,207.40 : x
  2. Step 2: Convert to fraction form
    68,660.20/102,788.70 = 51,207.40/x
  3. Step 3: Cross multiply
    68,660.20x = 102,788.70 × 51,207.40
  4. Step 4: Simplify right side
    68,660.20x = 5,263,542,076.38
  5. Step 5: Solve for x
    x = 5,263,542,076.38/68,660.20
  6. Step 6: Final answer
    x = 76,660.74

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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.