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Finding the Fourth Proportional to 71,072.53, 106,035.23 and 68,488.21

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Solution

The fourth proportional to 71,072.53, 106,035.23 and 68,488.21 is: 102,179.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,072.53 : 106,035.23 = 68,488.21 : x
  2. Step 2: Convert to fraction form
    71,072.53/106,035.23 = 68,488.21/x
  3. Step 3: Cross multiply
    71,072.53x = 106,035.23 × 68,488.21
  4. Step 4: Simplify right side
    71,072.53x = 7,262,163,099.64
  5. Step 5: Solve for x
    x = 7,262,163,099.64/71,072.53
  6. Step 6: Final answer
    x = 102,179.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.