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Finding the Fourth Proportional to 55,287.88, 82,931.81 and 18,351.88

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Solution

The fourth proportional to 55,287.88, 82,931.81 and 18,351.88 is: 27,527.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,287.88 : 82,931.81 = 18,351.88 : x
  2. Step 2: Convert to fraction form
    55,287.88/82,931.81 = 18,351.88/x
  3. Step 3: Cross multiply
    55,287.88x = 82,931.81 × 18,351.88
  4. Step 4: Simplify right side
    55,287.88x = 1,521,954,625.30
  5. Step 5: Solve for x
    x = 1,521,954,625.30/55,287.88
  6. Step 6: Final answer
    x = 27,527.82

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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.