Home / 54,121.20-81,167.40-16,681.20

Finding the Fourth Proportional to 54,121.20, 81,167.40 and 16,681.20

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Solution

The fourth proportional to 54,121.20, 81,167.40 and 16,681.20 is: 25,017.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,121.20 : 81,167.40 = 16,681.20 : x
  2. Step 2: Convert to fraction form
    54,121.20/81,167.40 = 16,681.20/x
  3. Step 3: Cross multiply
    54,121.20x = 81,167.40 × 16,681.20
  4. Step 4: Simplify right side
    54,121.20x = 1,353,969,632.88
  5. Step 5: Solve for x
    x = 1,353,969,632.88/54,121.20
  6. Step 6: Final answer
    x = 25,017.36

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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.