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Finding the Fourth Proportional to 87,648, 120,954.24 and 49,944.12

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Solution

The fourth proportional to 87,648, 120,954.24 and 49,944.12 is: 68,922.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,648 : 120,954.24 = 49,944.12 : x
  2. Step 2: Convert to fraction form
    87,648/120,954.24 = 49,944.12/x
  3. Step 3: Cross multiply
    87,648x = 120,954.24 × 49,944.12
  4. Step 4: Simplify right side
    87,648x = 6,040,953,077.07
  5. Step 5: Solve for x
    x = 6,040,953,077.07/87,648
  6. Step 6: Final answer
    x = 68,922.89

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1.5x scale

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.