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Finding the Fourth Proportional to 68,674.82, 94,763.24 and 40,000.76

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Solution

The fourth proportional to 68,674.82, 94,763.24 and 40,000.76 is: 55,196.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,674.82 : 94,763.24 = 40,000.76 : x
  2. Step 2: Convert to fraction form
    68,674.82/94,763.24 = 40,000.76/x
  3. Step 3: Cross multiply
    68,674.82x = 94,763.24 × 40,000.76
  4. Step 4: Simplify right side
    68,674.82x = 3,790,601,620.06
  5. Step 5: Solve for x
    x = 3,790,601,620.06/68,674.82
  6. Step 6: Final answer
    x = 55,196.38

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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.