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Finding the Fourth Proportional to 68,523.94, 102,715.90 and 38,879.16

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Solution

The fourth proportional to 68,523.94, 102,715.90 and 38,879.16 is: 58,279.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,523.94 : 102,715.90 = 38,879.16 : x
  2. Step 2: Convert to fraction form
    68,523.94/102,715.90 = 38,879.16/x
  3. Step 3: Cross multiply
    68,523.94x = 102,715.90 × 38,879.16
  4. Step 4: Simplify right side
    68,523.94x = 3,993,507,428.26
  5. Step 5: Solve for x
    x = 3,993,507,428.26/68,523.94
  6. Step 6: Final answer
    x = 58,279.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.