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Finding the Fourth Proportional to 68,906.88, 95,079.60 and 40,618.08

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Solution

The fourth proportional to 68,906.88, 95,079.60 and 40,618.08 is: 56,045.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,906.88 : 95,079.60 = 40,618.08 : x
  2. Step 2: Convert to fraction form
    68,906.88/95,079.60 = 40,618.08/x
  3. Step 3: Cross multiply
    68,906.88x = 95,079.60 × 40,618.08
  4. Step 4: Simplify right side
    68,906.88x = 3,861,950,799.17
  5. Step 5: Solve for x
    x = 3,861,950,799.17/68,906.88
  6. Step 6: Final answer
    x = 56,045.94

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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.