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Finding the Fourth Proportional to 54,393.62, 81,571.95 and 18,846.64

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Solution

The fourth proportional to 54,393.62, 81,571.95 and 18,846.64 is: 28,263.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,393.62 : 81,571.95 = 18,846.64 : x
  2. Step 2: Convert to fraction form
    54,393.62/81,571.95 = 18,846.64/x
  3. Step 3: Cross multiply
    54,393.62x = 81,571.95 × 18,846.64
  4. Step 4: Simplify right side
    54,393.62x = 1,537,357,128.63
  5. Step 5: Solve for x
    x = 1,537,357,128.63/54,393.62
  6. Step 6: Final answer
    x = 28,263.56

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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.