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Finding the Fourth Proportional to 68,271.54, 102,392.73 and 21,513.48

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Solution

The fourth proportional to 68,271.54, 102,392.73 and 21,513.48 is: 32,265.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,271.54 : 102,392.73 = 21,513.48 : x
  2. Step 2: Convert to fraction form
    68,271.54/102,392.73 = 21,513.48/x
  3. Step 3: Cross multiply
    68,271.54x = 102,392.73 × 21,513.48
  4. Step 4: Simplify right side
    68,271.54x = 2,202,823,949.00
  5. Step 5: Solve for x
    x = 2,202,823,949.00/68,271.54
  6. Step 6: Final answer
    x = 32,265.63

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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.