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Finding the Fourth Proportional to 81,479.81, 122,273.95 and 33,487.78

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Solution

The fourth proportional to 81,479.81, 122,273.95 and 33,487.78 is: 50,253.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.81 : 122,273.95 = 33,487.78 : x
  2. Step 2: Convert to fraction form
    81,479.81/122,273.95 = 33,487.78/x
  3. Step 3: Cross multiply
    81,479.81x = 122,273.95 × 33,487.78
  4. Step 4: Simplify right side
    81,479.81x = 4,094,683,039.98
  5. Step 5: Solve for x
    x = 4,094,683,039.98/81,479.81
  6. Step 6: Final answer
    x = 50,253.96

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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.