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Finding the Fourth Proportional to 75,481.61, 113,222.07 and 19,321.61

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Solution

The fourth proportional to 75,481.61, 113,222.07 and 19,321.61 is: 28,982.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,481.61 : 113,222.07 = 19,321.61 : x
  2. Step 2: Convert to fraction form
    75,481.61/113,222.07 = 19,321.61/x
  3. Step 3: Cross multiply
    75,481.61x = 113,222.07 × 19,321.61
  4. Step 4: Simplify right side
    75,481.61x = 2,187,632,113.82
  5. Step 5: Solve for x
    x = 2,187,632,113.82/75,481.61
  6. Step 6: Final answer
    x = 28,982.32

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1.5x scale

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.