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Finding the Fourth Proportional to 43,805.70, 65,769.30 and 28,107.90

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Solution

The fourth proportional to 43,805.70, 65,769.30 and 28,107.90 is: 42,200.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,805.70 : 65,769.30 = 28,107.90 : x
  2. Step 2: Convert to fraction form
    43,805.70/65,769.30 = 28,107.90/x
  3. Step 3: Cross multiply
    43,805.70x = 65,769.30 × 28,107.90
  4. Step 4: Simplify right side
    43,805.70x = 1,848,636,907.47
  5. Step 5: Solve for x
    x = 1,848,636,907.47/43,805.70
  6. Step 6: Final answer
    x = 42,200.83

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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.