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Finding the Fourth Proportional to 87,662.76, 120,945.06 and 49,910.28

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Solution

The fourth proportional to 87,662.76, 120,945.06 and 49,910.28 is: 68,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,662.76 : 120,945.06 = 49,910.28 : x
  2. Step 2: Convert to fraction form
    87,662.76/120,945.06 = 49,910.28/x
  3. Step 3: Cross multiply
    87,662.76x = 120,945.06 × 49,910.28
  4. Step 4: Simplify right side
    87,662.76x = 6,036,401,809.22
  5. Step 5: Solve for x
    x = 6,036,401,809.22/87,662.76
  6. Step 6: Final answer
    x = 68,859.36

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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.