Home / 68,634.20-102,749.70-51,181.40

Finding the Fourth Proportional to 68,634.20, 102,749.70 and 51,181.40

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Solution

The fourth proportional to 68,634.20, 102,749.70 and 51,181.40 is: 76,621.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,634.20 : 102,749.70 = 51,181.40 : x
  2. Step 2: Convert to fraction form
    68,634.20/102,749.70 = 51,181.40/x
  3. Step 3: Cross multiply
    68,634.20x = 102,749.70 × 51,181.40
  4. Step 4: Simplify right side
    68,634.20x = 5,258,873,495.58
  5. Step 5: Solve for x
    x = 5,258,873,495.58/68,634.20
  6. Step 6: Final answer
    x = 76,621.76

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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.