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Finding the Fourth Proportional to 54,504.30, 81,695.70 and 21,213.30

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Solution

The fourth proportional to 54,504.30, 81,695.70 and 21,213.30 is: 31,796.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,504.30 : 81,695.70 = 21,213.30 : x
  2. Step 2: Convert to fraction form
    54,504.30/81,695.70 = 21,213.30/x
  3. Step 3: Cross multiply
    54,504.30x = 81,695.70 × 21,213.30
  4. Step 4: Simplify right side
    54,504.30x = 1,733,035,392.81
  5. Step 5: Solve for x
    x = 1,733,035,392.81/54,504.30
  6. Step 6: Final answer
    x = 31,796.31

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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.