Home / 53,921.20-80,881.80-40,799.20

Finding the Fourth Proportional to 53,921.20, 80,881.80 and 40,799.20

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Solution

The fourth proportional to 53,921.20, 80,881.80 and 40,799.20 is: 61,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,921.20 : 80,881.80 = 40,799.20 : x
  2. Step 2: Convert to fraction form
    53,921.20/80,881.80 = 40,799.20/x
  3. Step 3: Cross multiply
    53,921.20x = 80,881.80 × 40,799.20
  4. Step 4: Simplify right side
    53,921.20x = 3,299,912,734.56
  5. Step 5: Solve for x
    x = 3,299,912,734.56/53,921.20
  6. Step 6: Final answer
    x = 61,198.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.