Home / 87,787.80-131,668.34-28,623.38

Finding the Fourth Proportional to 87,787.80, 131,668.34 and 28,623.38

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Solution

The fourth proportional to 87,787.80, 131,668.34 and 28,623.38 is: 42,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,787.80 : 131,668.34 = 28,623.38 : x
  2. Step 2: Convert to fraction form
    87,787.80/131,668.34 = 28,623.38/x
  3. Step 3: Cross multiply
    87,787.80x = 131,668.34 × 28,623.38
  4. Step 4: Simplify right side
    87,787.80x = 3,768,792,128.33
  5. Step 5: Solve for x
    x = 3,768,792,128.33/87,787.80
  6. Step 6: Final answer
    x = 42,930.70

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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.