Home / 75,431.75-113,147.62-19,271.98

Finding the Fourth Proportional to 75,431.75, 113,147.62 and 19,271.98

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Solution

The fourth proportional to 75,431.75, 113,147.62 and 19,271.98 is: 28,907.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,431.75 : 113,147.62 = 19,271.98 : x
  2. Step 2: Convert to fraction form
    75,431.75/113,147.62 = 19,271.98/x
  3. Step 3: Cross multiply
    75,431.75x = 113,147.62 × 19,271.98
  4. Step 4: Simplify right side
    75,431.75x = 2,180,578,669.69
  5. Step 5: Solve for x
    x = 2,180,578,669.69/75,431.75
  6. Step 6: Final answer
    x = 28,907.97

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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.