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Finding the Fourth Proportional to 68,301.78, 102,469.14 and 21,554.52

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Solution

The fourth proportional to 68,301.78, 102,469.14 and 21,554.52 is: 32,336.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,301.78 : 102,469.14 = 21,554.52 : x
  2. Step 2: Convert to fraction form
    68,301.78/102,469.14 = 21,554.52/x
  3. Step 3: Cross multiply
    68,301.78x = 102,469.14 × 21,554.52
  4. Step 4: Simplify right side
    68,301.78x = 2,208,673,127.51
  5. Step 5: Solve for x
    x = 2,208,673,127.51/68,301.78
  6. Step 6: Final answer
    x = 32,336.98

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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.