Home / 85,183.21-127,693.47-31,860.73

Finding the Fourth Proportional to 85,183.21, 127,693.47 and 31,860.73

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Solution

The fourth proportional to 85,183.21, 127,693.47 and 31,860.73 is: 47,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,183.21 : 127,693.47 = 31,860.73 : x
  2. Step 2: Convert to fraction form
    85,183.21/127,693.47 = 31,860.73/x
  3. Step 3: Cross multiply
    85,183.21x = 127,693.47 × 31,860.73
  4. Step 4: Simplify right side
    85,183.21x = 4,068,407,170.43
  5. Step 5: Solve for x
    x = 4,068,407,170.43/85,183.21
  6. Step 6: Final answer
    x = 47,760.67

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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.