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Finding the Fourth Proportional to 70,189.92, 105,340.11 and 32,730.69

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Solution

The fourth proportional to 70,189.92, 105,340.11 and 32,730.69 is: 49,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,189.92 : 105,340.11 = 32,730.69 : x
  2. Step 2: Convert to fraction form
    70,189.92/105,340.11 = 32,730.69/x
  3. Step 3: Cross multiply
    70,189.92x = 105,340.11 × 32,730.69
  4. Step 4: Simplify right side
    70,189.92x = 3,447,854,484.98
  5. Step 5: Solve for x
    x = 3,447,854,484.98/70,189.92
  6. Step 6: Final answer
    x = 49,121.79

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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.