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Finding the Fourth Proportional to 67,855.78, 101,788.53 and 17,935.21

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Solution

The fourth proportional to 67,855.78, 101,788.53 and 17,935.21 is: 26,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,855.78 : 101,788.53 = 17,935.21 : x
  2. Step 2: Convert to fraction form
    67,855.78/101,788.53 = 17,935.21/x
  3. Step 3: Cross multiply
    67,855.78x = 101,788.53 × 17,935.21
  4. Step 4: Simplify right side
    67,855.78x = 1,825,598,661.14
  5. Step 5: Solve for x
    x = 1,825,598,661.14/67,855.78
  6. Step 6: Final answer
    x = 26,904.10

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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.