Home / 72,684.82-109,069.53-30,561.85

Finding the Fourth Proportional to 72,684.82, 109,069.53 and 30,561.85

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Solution

The fourth proportional to 72,684.82, 109,069.53 and 30,561.85 is: 45,860.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,684.82 : 109,069.53 = 30,561.85 : x
  2. Step 2: Convert to fraction form
    72,684.82/109,069.53 = 30,561.85/x
  3. Step 3: Cross multiply
    72,684.82x = 109,069.53 × 30,561.85
  4. Step 4: Simplify right side
    72,684.82x = 3,333,366,615.43
  5. Step 5: Solve for x
    x = 3,333,366,615.43/72,684.82
  6. Step 6: Final answer
    x = 45,860.56

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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.