Home / 54,020.42-80,975.25-20,731.55

Finding the Fourth Proportional to 54,020.42, 80,975.25 and 20,731.55

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Solution

The fourth proportional to 54,020.42, 80,975.25 and 20,731.55 is: 31,076.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,020.42 : 80,975.25 = 20,731.55 : x
  2. Step 2: Convert to fraction form
    54,020.42/80,975.25 = 20,731.55/x
  3. Step 3: Cross multiply
    54,020.42x = 80,975.25 × 20,731.55
  4. Step 4: Simplify right side
    54,020.42x = 1,678,742,444.14
  5. Step 5: Solve for x
    x = 1,678,742,444.14/54,020.42
  6. Step 6: Final answer
    x = 31,076.07

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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.