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Finding the Fourth Proportional to 75,243.78, 112,789.85 and 47,183.67

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Solution

The fourth proportional to 75,243.78, 112,789.85 and 47,183.67 is: 70,727.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,243.78 : 112,789.85 = 47,183.67 : x
  2. Step 2: Convert to fraction form
    75,243.78/112,789.85 = 47,183.67/x
  3. Step 3: Cross multiply
    75,243.78x = 112,789.85 × 47,183.67
  4. Step 4: Simplify right side
    75,243.78x = 5,321,838,825.83
  5. Step 5: Solve for x
    x = 5,321,838,825.83/75,243.78
  6. Step 6: Final answer
    x = 70,727.96

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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.