Home / 54,651.42-75,419.19-30,778.50

Finding the Fourth Proportional to 54,651.42, 75,419.19 and 30,778.50

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Solution

The fourth proportional to 54,651.42, 75,419.19 and 30,778.50 is: 42,474.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,651.42 : 75,419.19 = 30,778.50 : x
  2. Step 2: Convert to fraction form
    54,651.42/75,419.19 = 30,778.50/x
  3. Step 3: Cross multiply
    54,651.42x = 75,419.19 × 30,778.50
  4. Step 4: Simplify right side
    54,651.42x = 2,321,289,539.42
  5. Step 5: Solve for x
    x = 2,321,289,539.42/54,651.42
  6. Step 6: Final answer
    x = 42,474.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.