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Finding the Fourth Proportional to 54,077.40, 80,921.70 and 49,411.80

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Solution

The fourth proportional to 54,077.40, 80,921.70 and 49,411.80 is: 73,940.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,077.40 : 80,921.70 = 49,411.80 : x
  2. Step 2: Convert to fraction form
    54,077.40/80,921.70 = 49,411.80/x
  3. Step 3: Cross multiply
    54,077.40x = 80,921.70 × 49,411.80
  4. Step 4: Simplify right side
    54,077.40x = 3,998,486,856.06
  5. Step 5: Solve for x
    x = 3,998,486,856.06/54,077.40
  6. Step 6: Final answer
    x = 73,940.07

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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.