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Finding the Fourth Proportional to 54,934.40, 82,390.80 and 17,998.40

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Solution

The fourth proportional to 54,934.40, 82,390.80 and 17,998.40 is: 26,994.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,934.40 : 82,390.80 = 17,998.40 : x
  2. Step 2: Convert to fraction form
    54,934.40/82,390.80 = 17,998.40/x
  3. Step 3: Cross multiply
    54,934.40x = 82,390.80 × 17,998.40
  4. Step 4: Simplify right side
    54,934.40x = 1,482,902,574.72
  5. Step 5: Solve for x
    x = 1,482,902,574.72/54,934.40
  6. Step 6: Final answer
    x = 26,994.06

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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.