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Finding the Fourth Proportional to 51,604.57, 71,205.51 and 28,939.96

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Solution

The fourth proportional to 51,604.57, 71,205.51 and 28,939.96 is: 39,932.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,604.57 : 71,205.51 = 28,939.96 : x
  2. Step 2: Convert to fraction form
    51,604.57/71,205.51 = 28,939.96/x
  3. Step 3: Cross multiply
    51,604.57x = 71,205.51 × 28,939.96
  4. Step 4: Simplify right side
    51,604.57x = 2,060,684,611.18
  5. Step 5: Solve for x
    x = 2,060,684,611.18/51,604.57
  6. Step 6: Final answer
    x = 39,932.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.