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Finding the Fourth Proportional to 33,756.60, 50,489.10 and 28,507.80

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Solution

The fourth proportional to 33,756.60, 50,489.10 and 28,507.80 is: 42,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,756.60 : 50,489.10 = 28,507.80 : x
  2. Step 2: Convert to fraction form
    33,756.60/50,489.10 = 28,507.80/x
  3. Step 3: Cross multiply
    33,756.60x = 50,489.10 × 28,507.80
  4. Step 4: Simplify right side
    33,756.60x = 1,439,333,164.98
  5. Step 5: Solve for x
    x = 1,439,333,164.98/33,756.60
  6. Step 6: Final answer
    x = 42,638.57

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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.