Home / 68,621.80-102,942.30-29,178.60

Finding the Fourth Proportional to 68,621.80, 102,942.30 and 29,178.60

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Solution

The fourth proportional to 68,621.80, 102,942.30 and 29,178.60 is: 43,771.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,621.80 : 102,942.30 = 29,178.60 : x
  2. Step 2: Convert to fraction form
    68,621.80/102,942.30 = 29,178.60/x
  3. Step 3: Cross multiply
    68,621.80x = 102,942.30 × 29,178.60
  4. Step 4: Simplify right side
    68,621.80x = 3,003,712,194.78
  5. Step 5: Solve for x
    x = 3,003,712,194.78/68,621.80
  6. Step 6: Final answer
    x = 43,771.98

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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.