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Finding the Fourth Proportional to 68,242.44, 102,374.79 and 21,484.38

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Solution

The fourth proportional to 68,242.44, 102,374.79 and 21,484.38 is: 32,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,242.44 : 102,374.79 = 21,484.38 : x
  2. Step 2: Convert to fraction form
    68,242.44/102,374.79 = 21,484.38/x
  3. Step 3: Cross multiply
    68,242.44x = 102,374.79 × 21,484.38
  4. Step 4: Simplify right side
    68,242.44x = 2,199,458,890.78
  5. Step 5: Solve for x
    x = 2,199,458,890.78/68,242.44
  6. Step 6: Final answer
    x = 32,230.07

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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.