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Finding the Fourth Proportional to 70,449.35, 105,422.51 and 61,198.34

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Solution

The fourth proportional to 70,449.35, 105,422.51 and 61,198.34 is: 91,579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,449.35 : 105,422.51 = 61,198.34 : x
  2. Step 2: Convert to fraction form
    70,449.35/105,422.51 = 61,198.34/x
  3. Step 3: Cross multiply
    70,449.35x = 105,422.51 × 61,198.34
  4. Step 4: Simplify right side
    70,449.35x = 6,451,682,236.52
  5. Step 5: Solve for x
    x = 6,451,682,236.52/70,449.35
  6. Step 6: Final answer
    x = 91,579.02

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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.