Home / 83,918.02-125,879.54-20,738.12

Finding the Fourth Proportional to 83,918.02, 125,879.54 and 20,738.12

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Solution

The fourth proportional to 83,918.02, 125,879.54 and 20,738.12 is: 31,107.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,918.02 : 125,879.54 = 20,738.12 : x
  2. Step 2: Convert to fraction form
    83,918.02/125,879.54 = 20,738.12/x
  3. Step 3: Cross multiply
    83,918.02x = 125,879.54 × 20,738.12
  4. Step 4: Simplify right side
    83,918.02x = 2,610,504,902.37
  5. Step 5: Solve for x
    x = 2,610,504,902.37/83,918.02
  6. Step 6: Final answer
    x = 31,107.80

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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.