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Finding the Fourth Proportional to 68,349.61, 102,527.52 and 20,961.24

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Solution

The fourth proportional to 68,349.61, 102,527.52 and 20,961.24 is: 31,442.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,349.61 : 102,527.52 = 20,961.24 : x
  2. Step 2: Convert to fraction form
    68,349.61/102,527.52 = 20,961.24/x
  3. Step 3: Cross multiply
    68,349.61x = 102,527.52 × 20,961.24
  4. Step 4: Simplify right side
    68,349.61x = 2,149,103,953.32
  5. Step 5: Solve for x
    x = 2,149,103,953.32/68,349.61
  6. Step 6: Final answer
    x = 31,442.81

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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.