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Finding the Fourth Proportional to 68,546.60, 102,800.70 and 21,813.80

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Solution

The fourth proportional to 68,546.60, 102,800.70 and 21,813.80 is: 32,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,546.60 : 102,800.70 = 21,813.80 : x
  2. Step 2: Convert to fraction form
    68,546.60/102,800.70 = 21,813.80/x
  3. Step 3: Cross multiply
    68,546.60x = 102,800.70 × 21,813.80
  4. Step 4: Simplify right side
    68,546.60x = 2,242,473,909.66
  5. Step 5: Solve for x
    x = 2,242,473,909.66/68,546.60
  6. Step 6: Final answer
    x = 32,714.59

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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.