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Finding the Fourth Proportional to 68,279.20, 102,418.80 and 41,898.40

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Solution

The fourth proportional to 68,279.20, 102,418.80 and 41,898.40 is: 62,847.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,279.20 : 102,418.80 = 41,898.40 : x
  2. Step 2: Convert to fraction form
    68,279.20/102,418.80 = 41,898.40/x
  3. Step 3: Cross multiply
    68,279.20x = 102,418.80 × 41,898.40
  4. Step 4: Simplify right side
    68,279.20x = 4,291,183,849.92
  5. Step 5: Solve for x
    x = 4,291,183,849.92/68,279.20
  6. Step 6: Final answer
    x = 62,847.60

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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.