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Finding the Fourth Proportional to 68,672.44, 94,770.30 and 40,380.76

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Solution

The fourth proportional to 68,672.44, 94,770.30 and 40,380.76 is: 55,726.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,672.44 : 94,770.30 = 40,380.76 : x
  2. Step 2: Convert to fraction form
    68,672.44/94,770.30 = 40,380.76/x
  3. Step 3: Cross multiply
    68,672.44x = 94,770.30 × 40,380.76
  4. Step 4: Simplify right side
    68,672.44x = 3,826,896,739.43
  5. Step 5: Solve for x
    x = 3,826,896,739.43/68,672.44
  6. Step 6: Final answer
    x = 55,726.82

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1.5x scale

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.