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Finding the Fourth Proportional to 87,203.82, 120,353.49 and 50,917.14

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Solution

The fourth proportional to 87,203.82, 120,353.49 and 50,917.14 is: 70,272.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,203.82 : 120,353.49 = 50,917.14 : x
  2. Step 2: Convert to fraction form
    87,203.82/120,353.49 = 50,917.14/x
  3. Step 3: Cross multiply
    87,203.82x = 120,353.49 × 50,917.14
  4. Step 4: Simplify right side
    87,203.82x = 6,128,055,499.82
  5. Step 5: Solve for x
    x = 6,128,055,499.82/87,203.82
  6. Step 6: Final answer
    x = 70,272.79

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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.