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Finding the Fourth Proportional to 54,479.16, 81,718.80 and 17,039.42

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Solution

The fourth proportional to 54,479.16, 81,718.80 and 17,039.42 is: 25,559.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,479.16 : 81,718.80 = 17,039.42 : x
  2. Step 2: Convert to fraction form
    54,479.16/81,718.80 = 17,039.42/x
  3. Step 3: Cross multiply
    54,479.16x = 81,718.80 × 17,039.42
  4. Step 4: Simplify right side
    54,479.16x = 1,392,440,955.10
  5. Step 5: Solve for x
    x = 1,392,440,955.10/54,479.16
  6. Step 6: Final answer
    x = 25,559.15

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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.