Home / 71,046.30-106,680-67,890.94

Finding the Fourth Proportional to 71,046.30, 106,680 and 67,890.94

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Solution

The fourth proportional to 71,046.30, 106,680 and 67,890.94 is: 101,942.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,046.30 : 106,680 = 67,890.94 : x
  2. Step 2: Convert to fraction form
    71,046.30/106,680 = 67,890.94/x
  3. Step 3: Cross multiply
    71,046.30x = 106,680 × 67,890.94
  4. Step 4: Simplify right side
    71,046.30x = 7,242,605,479.20
  5. Step 5: Solve for x
    x = 7,242,605,479.20/71,046.30
  6. Step 6: Final answer
    x = 101,942.05

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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.