Home / 39,128.48-54,028.32-36,143.20

Finding the Fourth Proportional to 39,128.48, 54,028.32 and 36,143.20

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Solution

The fourth proportional to 39,128.48, 54,028.32 and 36,143.20 is: 49,906.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,128.48 : 54,028.32 = 36,143.20 : x
  2. Step 2: Convert to fraction form
    39,128.48/54,028.32 = 36,143.20/x
  3. Step 3: Cross multiply
    39,128.48x = 54,028.32 × 36,143.20
  4. Step 4: Simplify right side
    39,128.48x = 1,952,756,375.42
  5. Step 5: Solve for x
    x = 1,952,756,375.42/39,128.48
  6. Step 6: Final answer
    x = 49,906.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.