Home / 71,222.52-106,839.86-18,631.92

Finding the Fourth Proportional to 71,222.52, 106,839.86 and 18,631.92

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Solution

The fourth proportional to 71,222.52, 106,839.86 and 18,631.92 is: 27,949.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,222.52 : 106,839.86 = 18,631.92 : x
  2. Step 2: Convert to fraction form
    71,222.52/106,839.86 = 18,631.92/x
  3. Step 3: Cross multiply
    71,222.52x = 106,839.86 × 18,631.92
  4. Step 4: Simplify right side
    71,222.52x = 1,990,631,631.17
  5. Step 5: Solve for x
    x = 1,990,631,631.17/71,222.52
  6. Step 6: Final answer
    x = 27,949.47

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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.