Home / 54,069.21-81,065.61-20,761.20

Finding the Fourth Proportional to 54,069.21, 81,065.61 and 20,761.20

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Solution

The fourth proportional to 54,069.21, 81,065.61 and 20,761.20 is: 31,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,069.21 : 81,065.61 = 20,761.20 : x
  2. Step 2: Convert to fraction form
    54,069.21/81,065.61 = 20,761.20/x
  3. Step 3: Cross multiply
    54,069.21x = 81,065.61 × 20,761.20
  4. Step 4: Simplify right side
    54,069.21x = 1,683,019,342.33
  5. Step 5: Solve for x
    x = 1,683,019,342.33/54,069.21
  6. Step 6: Final answer
    x = 31,127.13

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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.