Home / 68,488.20-102,732.30-57,990.60

Finding the Fourth Proportional to 68,488.20, 102,732.30 and 57,990.60

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Solution

The fourth proportional to 68,488.20, 102,732.30 and 57,990.60 is: 86,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,488.20 : 102,732.30 = 57,990.60 : x
  2. Step 2: Convert to fraction form
    68,488.20/102,732.30 = 57,990.60/x
  3. Step 3: Cross multiply
    68,488.20x = 102,732.30 × 57,990.60
  4. Step 4: Simplify right side
    68,488.20x = 5,957,507,716.38
  5. Step 5: Solve for x
    x = 5,957,507,716.38/68,488.20
  6. Step 6: Final answer
    x = 86,985.90

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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.