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Finding the Fourth Proportional to 61,207.34, 91,828.16 and 21,768.44

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Solution

The fourth proportional to 61,207.34, 91,828.16 and 21,768.44 is: 32,658.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,207.34 : 91,828.16 = 21,768.44 : x
  2. Step 2: Convert to fraction form
    61,207.34/91,828.16 = 21,768.44/x
  3. Step 3: Cross multiply
    61,207.34x = 91,828.16 × 21,768.44
  4. Step 4: Simplify right side
    61,207.34x = 1,998,955,682.43
  5. Step 5: Solve for x
    x = 1,998,955,682.43/61,207.34
  6. Step 6: Final answer
    x = 32,658.76

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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.