Home / 81,279.59-121,923.46-25,879.91

Finding the Fourth Proportional to 81,279.59, 121,923.46 and 25,879.91

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Solution

The fourth proportional to 81,279.59, 121,923.46 and 25,879.91 is: 38,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.59 : 121,923.46 = 25,879.91 : x
  2. Step 2: Convert to fraction form
    81,279.59/121,923.46 = 25,879.91/x
  3. Step 3: Cross multiply
    81,279.59x = 121,923.46 × 25,879.91
  4. Step 4: Simplify right side
    81,279.59x = 3,155,367,562.07
  5. Step 5: Solve for x
    x = 3,155,367,562.07/81,279.59
  6. Step 6: Final answer
    x = 38,821.16

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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.