Home / 68,628.20-102,740.70-51,175.40

Finding the Fourth Proportional to 68,628.20, 102,740.70 and 51,175.40

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Solution

The fourth proportional to 68,628.20, 102,740.70 and 51,175.40 is: 76,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,628.20 : 102,740.70 = 51,175.40 : x
  2. Step 2: Convert to fraction form
    68,628.20/102,740.70 = 51,175.40/x
  3. Step 3: Cross multiply
    68,628.20x = 102,740.70 × 51,175.40
  4. Step 4: Simplify right side
    68,628.20x = 5,257,796,418.78
  5. Step 5: Solve for x
    x = 5,257,796,418.78/68,628.20
  6. Step 6: Final answer
    x = 76,612.77

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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.