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Finding the Fourth Proportional to 68,726.34, 103,067.64 and 21,968.28

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Solution

The fourth proportional to 68,726.34, 103,067.64 and 21,968.28 is: 32,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,726.34 : 103,067.64 = 21,968.28 : x
  2. Step 2: Convert to fraction form
    68,726.34/103,067.64 = 21,968.28/x
  3. Step 3: Cross multiply
    68,726.34x = 103,067.64 × 21,968.28
  4. Step 4: Simplify right side
    68,726.34x = 2,264,218,774.46
  5. Step 5: Solve for x
    x = 2,264,218,774.46/68,726.34
  6. Step 6: Final answer
    x = 32,945.43

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1.5x scale

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.