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Finding the Fourth Proportional to 103,575.92, 155,367.23 and 28,696.79

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Solution

The fourth proportional to 103,575.92, 155,367.23 and 28,696.79 is: 43,046.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,575.92 : 155,367.23 = 28,696.79 : x
  2. Step 2: Convert to fraction form
    103,575.92/155,367.23 = 28,696.79/x
  3. Step 3: Cross multiply
    103,575.92x = 155,367.23 × 28,696.79
  4. Step 4: Simplify right side
    103,575.92x = 4,458,541,017.13
  5. Step 5: Solve for x
    x = 4,458,541,017.13/103,575.92
  6. Step 6: Final answer
    x = 43,046.11

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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.