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Finding the Fourth Proportional to 68,589.72, 94,649.40 and 38,369.88

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Solution

The fourth proportional to 68,589.72, 94,649.40 and 38,369.88 is: 52,947.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,589.72 : 94,649.40 = 38,369.88 : x
  2. Step 2: Convert to fraction form
    68,589.72/94,649.40 = 38,369.88/x
  3. Step 3: Cross multiply
    68,589.72x = 94,649.40 × 38,369.88
  4. Step 4: Simplify right side
    68,589.72x = 3,631,686,120.07
  5. Step 5: Solve for x
    x = 3,631,686,120.07/68,589.72
  6. Step 6: Final answer
    x = 52,947.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.