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Finding the Fourth Proportional to 85,404.00, 128,183.74 and 45,456.52

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Solution

The fourth proportional to 85,404.00, 128,183.74 and 45,456.52 is: 68,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,404.00 : 128,183.74 = 45,456.52 : x
  2. Step 2: Convert to fraction form
    85,404.00/128,183.74 = 45,456.52/x
  3. Step 3: Cross multiply
    85,404.00x = 128,183.74 × 45,456.52
  4. Step 4: Simplify right side
    85,404.00x = 5,826,786,193.24
  5. Step 5: Solve for x
    x = 5,826,786,193.24/85,404.00
  6. Step 6: Final answer
    x = 68,226.15

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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.