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Finding the Fourth Proportional to 100,515.60, 150,668.51 and 33,932.79

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Solution

The fourth proportional to 100,515.60, 150,668.51 and 33,932.79 is: 50,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,515.60 : 150,668.51 = 33,932.79 : x
  2. Step 2: Convert to fraction form
    100,515.60/150,668.51 = 33,932.79/x
  3. Step 3: Cross multiply
    100,515.60x = 150,668.51 × 33,932.79
  4. Step 4: Simplify right side
    100,515.60x = 5,112,602,739.78
  5. Step 5: Solve for x
    x = 5,112,602,739.78/100,515.60
  6. Step 6: Final answer
    x = 50,863.77

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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.