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Finding the Fourth Proportional to 54,579, 81,894.42 and 17,643

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Solution

The fourth proportional to 54,579, 81,894.42 and 17,643 is: 26,472.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,579 : 81,894.42 = 17,643 : x
  2. Step 2: Convert to fraction form
    54,579/81,894.42 = 17,643/x
  3. Step 3: Cross multiply
    54,579x = 81,894.42 × 17,643
  4. Step 4: Simplify right side
    54,579x = 1,444,863,252.06
  5. Step 5: Solve for x
    x = 1,444,863,252.06/54,579
  6. Step 6: Final answer
    x = 26,472.88

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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.