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Finding the Fourth Proportional to 60,668.88, 91,016.28 and 21,227.28

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Solution

The fourth proportional to 60,668.88, 91,016.28 and 21,227.28 is: 31,845.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,668.88 : 91,016.28 = 21,227.28 : x
  2. Step 2: Convert to fraction form
    60,668.88/91,016.28 = 21,227.28/x
  3. Step 3: Cross multiply
    60,668.88x = 91,016.28 × 21,227.28
  4. Step 4: Simplify right side
    60,668.88x = 1,932,028,060.12
  5. Step 5: Solve for x
    x = 1,932,028,060.12/60,668.88
  6. Step 6: Final answer
    x = 31,845.45

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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.