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Finding the Fourth Proportional to 54,981.88, 82,474.72 and 18,957.89

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Solution

The fourth proportional to 54,981.88, 82,474.72 and 18,957.89 is: 28,437.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,981.88 : 82,474.72 = 18,957.89 : x
  2. Step 2: Convert to fraction form
    54,981.88/82,474.72 = 18,957.89/x
  3. Step 3: Cross multiply
    54,981.88x = 82,474.72 × 18,957.89
  4. Step 4: Simplify right side
    54,981.88x = 1,563,546,828.33
  5. Step 5: Solve for x
    x = 1,563,546,828.33/54,981.88
  6. Step 6: Final answer
    x = 28,437.49

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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.