Home / 68,442.40-102,639.36-42,067.84

Finding the Fourth Proportional to 68,442.40, 102,639.36 and 42,067.84

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Solution

The fourth proportional to 68,442.40, 102,639.36 and 42,067.84 is: 63,086.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,442.40 : 102,639.36 = 42,067.84 : x
  2. Step 2: Convert to fraction form
    68,442.40/102,639.36 = 42,067.84/x
  3. Step 3: Cross multiply
    68,442.40x = 102,639.36 × 42,067.84
  4. Step 4: Simplify right side
    68,442.40x = 4,317,816,174.18
  5. Step 5: Solve for x
    x = 4,317,816,174.18/68,442.40
  6. Step 6: Final answer
    x = 63,086.86

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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.