Home / 81,021.06-111,843.18-49,200.21

Finding the Fourth Proportional to 81,021.06, 111,843.18 and 49,200.21

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Solution

The fourth proportional to 81,021.06, 111,843.18 and 49,200.21 is: 67,917.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,021.06 : 111,843.18 = 49,200.21 : x
  2. Step 2: Convert to fraction form
    81,021.06/111,843.18 = 49,200.21/x
  3. Step 3: Cross multiply
    81,021.06x = 111,843.18 × 49,200.21
  4. Step 4: Simplify right side
    81,021.06x = 5,502,707,943.07
  5. Step 5: Solve for x
    x = 5,502,707,943.07/81,021.06
  6. Step 6: Final answer
    x = 67,917.01

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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.