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Finding the Fourth Proportional to 101,279.44, 151,872.99 and 42,079.78

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Solution

The fourth proportional to 101,279.44, 151,872.99 and 42,079.78 is: 63,100.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,279.44 : 151,872.99 = 42,079.78 : x
  2. Step 2: Convert to fraction form
    101,279.44/151,872.99 = 42,079.78/x
  3. Step 3: Cross multiply
    101,279.44x = 151,872.99 × 42,079.78
  4. Step 4: Simplify right side
    101,279.44x = 6,390,782,007.14
  5. Step 5: Solve for x
    x = 6,390,782,007.14/101,279.44
  6. Step 6: Final answer
    x = 63,100.49

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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.