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Finding the Fourth Proportional to 68,107.09, 94,034.09 and 42,623.78

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Solution

The fourth proportional to 68,107.09, 94,034.09 and 42,623.78 is: 58,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,107.09 : 94,034.09 = 42,623.78 : x
  2. Step 2: Convert to fraction form
    68,107.09/94,034.09 = 42,623.78/x
  3. Step 3: Cross multiply
    68,107.09x = 94,034.09 × 42,623.78
  4. Step 4: Simplify right side
    68,107.09x = 4,008,088,364.66
  5. Step 5: Solve for x
    x = 4,008,088,364.66/68,107.09
  6. Step 6: Final answer
    x = 58,849.80

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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.