Home / 85,558.78-128,338.19-23,229.28

Finding the Fourth Proportional to 85,558.78, 128,338.19 and 23,229.28

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Solution

The fourth proportional to 85,558.78, 128,338.19 and 23,229.28 is: 34,843.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,558.78 : 128,338.19 = 23,229.28 : x
  2. Step 2: Convert to fraction form
    85,558.78/128,338.19 = 23,229.28/x
  3. Step 3: Cross multiply
    85,558.78x = 128,338.19 × 23,229.28
  4. Step 4: Simplify right side
    85,558.78x = 2,981,203,881.59
  5. Step 5: Solve for x
    x = 2,981,203,881.59/85,558.78
  6. Step 6: Final answer
    x = 34,843.93

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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.