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Finding the Fourth Proportional to 104,649.60, 156,974.40 and 38,091.90

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Solution

The fourth proportional to 104,649.60, 156,974.40 and 38,091.90 is: 57,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,649.60 : 156,974.40 = 38,091.90 : x
  2. Step 2: Convert to fraction form
    104,649.60/156,974.40 = 38,091.90/x
  3. Step 3: Cross multiply
    104,649.60x = 156,974.40 × 38,091.90
  4. Step 4: Simplify right side
    104,649.60x = 5,979,453,147.36
  5. Step 5: Solve for x
    x = 5,979,453,147.36/104,649.60
  6. Step 6: Final answer
    x = 57,137.85

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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.