Home / 57,742.40-86,618.46-20,299.21

Finding the Fourth Proportional to 57,742.40, 86,618.46 and 20,299.21

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Solution

The fourth proportional to 57,742.40, 86,618.46 and 20,299.21 is: 30,450.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,742.40 : 86,618.46 = 20,299.21 : x
  2. Step 2: Convert to fraction form
    57,742.40/86,618.46 = 20,299.21/x
  3. Step 3: Cross multiply
    57,742.40x = 86,618.46 × 20,299.21
  4. Step 4: Simplify right side
    57,742.40x = 1,758,286,168.99
  5. Step 5: Solve for x
    x = 1,758,286,168.99/57,742.40
  6. Step 6: Final answer
    x = 30,450.52

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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.