Home / 85,517.93-128,279.10-40,528.73

Finding the Fourth Proportional to 85,517.93, 128,279.10 and 40,528.73

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Solution

The fourth proportional to 85,517.93, 128,279.10 and 40,528.73 is: 60,794.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.93 : 128,279.10 = 40,528.73 : x
  2. Step 2: Convert to fraction form
    85,517.93/128,279.10 = 40,528.73/x
  3. Step 3: Cross multiply
    85,517.93x = 128,279.10 × 40,528.73
  4. Step 4: Simplify right side
    85,517.93x = 5,198,989,008.54
  5. Step 5: Solve for x
    x = 5,198,989,008.54/85,517.93
  6. Step 6: Final answer
    x = 60,794.14

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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.