Home / 103,623.62-155,435.45-28,743.77

Finding the Fourth Proportional to 103,623.62, 155,435.45 and 28,743.77

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Solution

The fourth proportional to 103,623.62, 155,435.45 and 28,743.77 is: 43,115.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.62 : 155,435.45 = 28,743.77 : x
  2. Step 2: Convert to fraction form
    103,623.62/155,435.45 = 28,743.77/x
  3. Step 3: Cross multiply
    103,623.62x = 155,435.45 × 28,743.77
  4. Step 4: Simplify right side
    103,623.62x = 4,467,800,824.65
  5. Step 5: Solve for x
    x = 4,467,800,824.65/103,623.62
  6. Step 6: Final answer
    x = 43,115.66

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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.