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Finding the Fourth Proportional to 84,472, 126,694.24 and 28,336.96

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Solution

The fourth proportional to 84,472, 126,694.24 and 28,336.96 is: 42,500.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,472 : 126,694.24 = 28,336.96 : x
  2. Step 2: Convert to fraction form
    84,472/126,694.24 = 28,336.96/x
  3. Step 3: Cross multiply
    84,472x = 126,694.24 × 28,336.96
  4. Step 4: Simplify right side
    84,472x = 3,590,129,611.11
  5. Step 5: Solve for x
    x = 3,590,129,611.11/84,472
  6. Step 6: Final answer
    x = 42,500.82

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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.