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Finding the Fourth Proportional to 100,387.35, 150,542.64 and 33,809.58

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Solution

The fourth proportional to 100,387.35, 150,542.64 and 33,809.58 is: 50,701.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,387.35 : 150,542.64 = 33,809.58 : x
  2. Step 2: Convert to fraction form
    100,387.35/150,542.64 = 33,809.58/x
  3. Step 3: Cross multiply
    100,387.35x = 150,542.64 × 33,809.58
  4. Step 4: Simplify right side
    100,387.35x = 5,089,783,430.49
  5. Step 5: Solve for x
    x = 5,089,783,430.49/100,387.35
  6. Step 6: Final answer
    x = 50,701.44

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1.5x scale

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.