Home / 54,266.44-81,412.08-20,986.80

Finding the Fourth Proportional to 54,266.44, 81,412.08 and 20,986.80

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Solution

The fourth proportional to 54,266.44, 81,412.08 and 20,986.80 is: 31,485.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,266.44 : 81,412.08 = 20,986.80 : x
  2. Step 2: Convert to fraction form
    54,266.44/81,412.08 = 20,986.80/x
  3. Step 3: Cross multiply
    54,266.44x = 81,412.08 × 20,986.80
  4. Step 4: Simplify right side
    54,266.44x = 1,708,579,040.54
  5. Step 5: Solve for x
    x = 1,708,579,040.54/54,266.44
  6. Step 6: Final answer
    x = 31,485.00

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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.