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Finding the Fourth Proportional to 54,407.70, 81,793.80 and 47,190.60

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Solution

The fourth proportional to 54,407.70, 81,793.80 and 47,190.60 is: 70,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,407.70 : 81,793.80 = 47,190.60 : x
  2. Step 2: Convert to fraction form
    54,407.70/81,793.80 = 47,190.60/x
  3. Step 3: Cross multiply
    54,407.70x = 81,793.80 × 47,190.60
  4. Step 4: Simplify right side
    54,407.70x = 3,859,898,498.28
  5. Step 5: Solve for x
    x = 3,859,898,498.28/54,407.70
  6. Step 6: Final answer
    x = 70,943.97

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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.