Home / 55,028-75,940.28-29,879.12

Finding the Fourth Proportional to 55,028, 75,940.28 and 29,879.12

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Solution

The fourth proportional to 55,028, 75,940.28 and 29,879.12 is: 41,234.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,028 : 75,940.28 = 29,879.12 : x
  2. Step 2: Convert to fraction form
    55,028/75,940.28 = 29,879.12/x
  3. Step 3: Cross multiply
    55,028x = 75,940.28 × 29,879.12
  4. Step 4: Simplify right side
    55,028x = 2,269,028,738.95
  5. Step 5: Solve for x
    x = 2,269,028,738.95/55,028
  6. Step 6: Final answer
    x = 41,234.08

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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.