Home / 54,178.41-81,271.26-20,898.75

Finding the Fourth Proportional to 54,178.41, 81,271.26 and 20,898.75

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Solution

The fourth proportional to 54,178.41, 81,271.26 and 20,898.75 is: 31,349.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,178.41 : 81,271.26 = 20,898.75 : x
  2. Step 2: Convert to fraction form
    54,178.41/81,271.26 = 20,898.75/x
  3. Step 3: Cross multiply
    54,178.41x = 81,271.26 × 20,898.75
  4. Step 4: Simplify right side
    54,178.41x = 1,698,467,744.93
  5. Step 5: Solve for x
    x = 1,698,467,744.93/54,178.41
  6. Step 6: Final answer
    x = 31,349.53

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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.