Home / 50,090.88-75,136.09-20,508.72

Finding the Fourth Proportional to 50,090.88, 75,136.09 and 20,508.72

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Solution

The fourth proportional to 50,090.88, 75,136.09 and 20,508.72 is: 30,762.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,090.88 : 75,136.09 = 20,508.72 : x
  2. Step 2: Convert to fraction form
    50,090.88/75,136.09 = 20,508.72/x
  3. Step 3: Cross multiply
    50,090.88x = 75,136.09 × 20,508.72
  4. Step 4: Simplify right side
    50,090.88x = 1,540,945,031.70
  5. Step 5: Solve for x
    x = 1,540,945,031.70/50,090.88
  6. Step 6: Final answer
    x = 30,762.99

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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.