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Finding the Fourth Proportional to 211,863.88, 317,795.82 and 54,086.68

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Solution

The fourth proportional to 211,863.88, 317,795.82 and 54,086.68 is: 81,130.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,863.88 : 317,795.82 = 54,086.68 : x
  2. Step 2: Convert to fraction form
    211,863.88/317,795.82 = 54,086.68/x
  3. Step 3: Cross multiply
    211,863.88x = 317,795.82 × 54,086.68
  4. Step 4: Simplify right side
    211,863.88x = 17,188,520,821.68
  5. Step 5: Solve for x
    x = 17,188,520,821.68/211,863.88
  6. Step 6: Final answer
    x = 81,130.02

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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.