Home / 87,768.18-121,119.54-47,481.78

Finding the Fourth Proportional to 87,768.18, 121,119.54 and 47,481.78

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Solution

The fourth proportional to 87,768.18, 121,119.54 and 47,481.78 is: 65,524.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,768.18 : 121,119.54 = 47,481.78 : x
  2. Step 2: Convert to fraction form
    87,768.18/121,119.54 = 47,481.78/x
  3. Step 3: Cross multiply
    87,768.18x = 121,119.54 × 47,481.78
  4. Step 4: Simplify right side
    87,768.18x = 5,750,971,351.98
  5. Step 5: Solve for x
    x = 5,750,971,351.98/87,768.18
  6. Step 6: Final answer
    x = 65,524.56

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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.