Home / 68,748.20-102,920.70-51,295.40

Finding the Fourth Proportional to 68,748.20, 102,920.70 and 51,295.40

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Solution

The fourth proportional to 68,748.20, 102,920.70 and 51,295.40 is: 76,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,748.20 : 102,920.70 = 51,295.40 : x
  2. Step 2: Convert to fraction form
    68,748.20/102,920.70 = 51,295.40/x
  3. Step 3: Cross multiply
    68,748.20x = 102,920.70 × 51,295.40
  4. Step 4: Simplify right side
    68,748.20x = 5,279,358,474.78
  5. Step 5: Solve for x
    x = 5,279,358,474.78/68,748.20
  6. Step 6: Final answer
    x = 76,792.68

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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.