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Finding the Fourth Proportional to 54,480.52, 81,726.09 and 21,203.29

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Solution

The fourth proportional to 54,480.52, 81,726.09 and 21,203.29 is: 31,807.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,480.52 : 81,726.09 = 21,203.29 : x
  2. Step 2: Convert to fraction form
    54,480.52/81,726.09 = 21,203.29/x
  3. Step 3: Cross multiply
    54,480.52x = 81,726.09 × 21,203.29
  4. Step 4: Simplify right side
    54,480.52x = 1,732,861,986.84
  5. Step 5: Solve for x
    x = 1,732,861,986.84/54,480.52
  6. Step 6: Final answer
    x = 31,807.00

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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.