Home / 75,431.62-113,147.44-19,271.86

Finding the Fourth Proportional to 75,431.62, 113,147.44 and 19,271.86

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Solution

The fourth proportional to 75,431.62, 113,147.44 and 19,271.86 is: 28,907.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,431.62 : 113,147.44 = 19,271.86 : x
  2. Step 2: Convert to fraction form
    75,431.62/113,147.44 = 19,271.86/x
  3. Step 3: Cross multiply
    75,431.62x = 113,147.44 × 19,271.86
  4. Step 4: Simplify right side
    75,431.62x = 2,180,561,291.99
  5. Step 5: Solve for x
    x = 2,180,561,291.99/75,431.62
  6. Step 6: Final answer
    x = 28,907.79

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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.