Home / 54,186.19-81,284.76-20,443.75

Finding the Fourth Proportional to 54,186.19, 81,284.76 and 20,443.75

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Solution

The fourth proportional to 54,186.19, 81,284.76 and 20,443.75 is: 30,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,186.19 : 81,284.76 = 20,443.75 : x
  2. Step 2: Convert to fraction form
    54,186.19/81,284.76 = 20,443.75/x
  3. Step 3: Cross multiply
    54,186.19x = 81,284.76 × 20,443.75
  4. Step 4: Simplify right side
    54,186.19x = 1,661,765,109.04
  5. Step 5: Solve for x
    x = 1,661,765,109.04/54,186.19
  6. Step 6: Final answer
    x = 30,667.69

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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.