Home / 85,571.20-128,247.45-41,102.20

Finding the Fourth Proportional to 85,571.20, 128,247.45 and 41,102.20

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Solution

The fourth proportional to 85,571.20, 128,247.45 and 41,102.20 is: 61,600.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,571.20 : 128,247.45 = 41,102.20 : x
  2. Step 2: Convert to fraction form
    85,571.20/128,247.45 = 41,102.20/x
  3. Step 3: Cross multiply
    85,571.20x = 128,247.45 × 41,102.20
  4. Step 4: Simplify right side
    85,571.20x = 5,271,252,339.39
  5. Step 5: Solve for x
    x = 5,271,252,339.39/85,571.20
  6. Step 6: Final answer
    x = 61,600.78

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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.