Home / 68,575.20-102,818.40-29,121.60

Finding the Fourth Proportional to 68,575.20, 102,818.40 and 29,121.60

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Solution

The fourth proportional to 68,575.20, 102,818.40 and 29,121.60 is: 43,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,575.20 : 102,818.40 = 29,121.60 : x
  2. Step 2: Convert to fraction form
    68,575.20/102,818.40 = 29,121.60/x
  3. Step 3: Cross multiply
    68,575.20x = 102,818.40 × 29,121.60
  4. Step 4: Simplify right side
    68,575.20x = 2,994,236,317.44
  5. Step 5: Solve for x
    x = 2,994,236,317.44/68,575.20
  6. Step 6: Final answer
    x = 43,663.54

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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.