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Finding the Fourth Proportional to 68,234.76, 102,367.08 and 20,853.78

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Solution

The fourth proportional to 68,234.76, 102,367.08 and 20,853.78 is: 31,285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,234.76 : 102,367.08 = 20,853.78 : x
  2. Step 2: Convert to fraction form
    68,234.76/102,367.08 = 20,853.78/x
  3. Step 3: Cross multiply
    68,234.76x = 102,367.08 × 20,853.78
  4. Step 4: Simplify right side
    68,234.76x = 2,134,740,565.56
  5. Step 5: Solve for x
    x = 2,134,740,565.56/68,234.76
  6. Step 6: Final answer
    x = 31,285.24

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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.