Home / 51,399.24-77,099.68-18,119.72

Finding the Fourth Proportional to 51,399.24, 77,099.68 and 18,119.72

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Solution

The fourth proportional to 51,399.24, 77,099.68 and 18,119.72 is: 27,179.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,399.24 : 77,099.68 = 18,119.72 : x
  2. Step 2: Convert to fraction form
    51,399.24/77,099.68 = 18,119.72/x
  3. Step 3: Cross multiply
    51,399.24x = 77,099.68 × 18,119.72
  4. Step 4: Simplify right side
    51,399.24x = 1,397,024,613.69
  5. Step 5: Solve for x
    x = 1,397,024,613.69/51,399.24
  6. Step 6: Final answer
    x = 27,179.87

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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.