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Finding the Fourth Proportional to 45,668.54, 68,455.82 and 21,940.46

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Solution

The fourth proportional to 45,668.54, 68,455.82 and 21,940.46 is: 32,888.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,668.54 : 68,455.82 = 21,940.46 : x
  2. Step 2: Convert to fraction form
    45,668.54/68,455.82 = 21,940.46/x
  3. Step 3: Cross multiply
    45,668.54x = 68,455.82 × 21,940.46
  4. Step 4: Simplify right side
    45,668.54x = 1,501,952,180.48
  5. Step 5: Solve for x
    x = 1,501,952,180.48/45,668.54
  6. Step 6: Final answer
    x = 32,888.11

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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.