Home / 71,204.23-106,812-21,280.69

Finding the Fourth Proportional to 71,204.23, 106,812 and 21,280.69

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Solution

The fourth proportional to 71,204.23, 106,812 and 21,280.69 is: 31,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,204.23 : 106,812 = 21,280.69 : x
  2. Step 2: Convert to fraction form
    71,204.23/106,812 = 21,280.69/x
  3. Step 3: Cross multiply
    71,204.23x = 106,812 × 21,280.69
  4. Step 4: Simplify right side
    71,204.23x = 2,273,033,060.28
  5. Step 5: Solve for x
    x = 2,273,033,060.28/71,204.23
  6. Step 6: Final answer
    x = 31,922.73

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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.