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Finding the Fourth Proportional to 54,336.70, 81,498.12 and 21,033.98

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Solution

The fourth proportional to 54,336.70, 81,498.12 and 21,033.98 is: 31,548.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,336.70 : 81,498.12 = 21,033.98 : x
  2. Step 2: Convert to fraction form
    54,336.70/81,498.12 = 21,033.98/x
  3. Step 3: Cross multiply
    54,336.70x = 81,498.12 × 21,033.98
  4. Step 4: Simplify right side
    54,336.70x = 1,714,229,826.12
  5. Step 5: Solve for x
    x = 1,714,229,826.12/54,336.70
  6. Step 6: Final answer
    x = 31,548.29

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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.