Home / 5,421,100.72-8,129,035.21-3,147,197.54

Finding the Fourth Proportional to 5,421,100.72, 8,129,035.21 and 3,147,197.54

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Solution

The fourth proportional to 5,421,100.72, 8,129,035.21 and 3,147,197.54 is: 4,719,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421,100.72 : 8,129,035.21 = 3,147,197.54 : x
  2. Step 2: Convert to fraction form
    5,421,100.72/8,129,035.21 = 3,147,197.54/x
  3. Step 3: Cross multiply
    5,421,100.72x = 8,129,035.21 × 3,147,197.54
  4. Step 4: Simplify right side
    5,421,100.72x = 25,583,679,615,485.38
  5. Step 5: Solve for x
    x = 25,583,679,615,485.38/5,421,100.72
  6. Step 6: Final answer
    x = 4,719,277.68

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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.