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Finding the Fourth Proportional to 68,647.80, 94,729.26 and 38,427.96

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Solution

The fourth proportional to 68,647.80, 94,729.26 and 38,427.96 is: 53,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,647.80 : 94,729.26 = 38,427.96 : x
  2. Step 2: Convert to fraction form
    68,647.80/94,729.26 = 38,427.96/x
  3. Step 3: Cross multiply
    68,647.80x = 94,729.26 × 38,427.96
  4. Step 4: Simplify right side
    68,647.80x = 3,640,252,214.11
  5. Step 5: Solve for x
    x = 3,640,252,214.11/68,647.80
  6. Step 6: Final answer
    x = 53,027.95

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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.