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Finding the Fourth Proportional to 100,484.88, 150,649.56 and 45,042

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Solution

The fourth proportional to 100,484.88, 150,649.56 and 45,042 is: 67,528.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,484.88 : 150,649.56 = 45,042 : x
  2. Step 2: Convert to fraction form
    100,484.88/150,649.56 = 45,042/x
  3. Step 3: Cross multiply
    100,484.88x = 150,649.56 × 45,042
  4. Step 4: Simplify right side
    100,484.88x = 6,785,557,481.52
  5. Step 5: Solve for x
    x = 6,785,557,481.52/100,484.88
  6. Step 6: Final answer
    x = 67,528.14

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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.