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Finding the Fourth Proportional to 101,768.67, 140,422.61 and 61,455.44

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Solution

The fourth proportional to 101,768.67, 140,422.61 and 61,455.44 is: 84,797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,768.67 : 140,422.61 = 61,455.44 : x
  2. Step 2: Convert to fraction form
    101,768.67/140,422.61 = 61,455.44/x
  3. Step 3: Cross multiply
    101,768.67x = 140,422.61 × 61,455.44
  4. Step 4: Simplify right side
    101,768.67x = 8,629,733,788.19
  5. Step 5: Solve for x
    x = 8,629,733,788.19/101,768.67
  6. Step 6: Final answer
    x = 84,797.55

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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.