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Finding the Fourth Proportional to 54,182.70, 81,220.74 and 31,664.80

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Solution

The fourth proportional to 54,182.70, 81,220.74 and 31,664.80 is: 47,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,182.70 : 81,220.74 = 31,664.80 : x
  2. Step 2: Convert to fraction form
    54,182.70/81,220.74 = 31,664.80/x
  3. Step 3: Cross multiply
    54,182.70x = 81,220.74 × 31,664.80
  4. Step 4: Simplify right side
    54,182.70x = 2,571,838,487.95
  5. Step 5: Solve for x
    x = 2,571,838,487.95/54,182.70
  6. Step 6: Final answer
    x = 47,466.05

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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.