Home / 43,811.40-65,717.10-20,440.20

Finding the Fourth Proportional to 43,811.40, 65,717.10 and 20,440.20

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Solution

The fourth proportional to 43,811.40, 65,717.10 and 20,440.20 is: 30,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,811.40 : 65,717.10 = 20,440.20 : x
  2. Step 2: Convert to fraction form
    43,811.40/65,717.10 = 20,440.20/x
  3. Step 3: Cross multiply
    43,811.40x = 65,717.10 × 20,440.20
  4. Step 4: Simplify right side
    43,811.40x = 1,343,270,667.42
  5. Step 5: Solve for x
    x = 1,343,270,667.42/43,811.40
  6. Step 6: Final answer
    x = 30,660.30

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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.