Home / 54,181.04-81,275.21-20,901.38

Finding the Fourth Proportional to 54,181.04, 81,275.21 and 20,901.38

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Solution

The fourth proportional to 54,181.04, 81,275.21 and 20,901.38 is: 31,353.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,181.04 : 81,275.21 = 20,901.38 : x
  2. Step 2: Convert to fraction form
    54,181.04/81,275.21 = 20,901.38/x
  3. Step 3: Cross multiply
    54,181.04x = 81,275.21 × 20,901.38
  4. Step 4: Simplify right side
    54,181.04x = 1,698,763,537.91
  5. Step 5: Solve for x
    x = 1,698,763,537.91/54,181.04
  6. Step 6: Final answer
    x = 31,353.47

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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.