Home / 71,291,142.91-98,379,231.72-40,350,647.89

Finding the Fourth Proportional to 71,291,142.91, 98,379,231.72 and 40,350,647.89

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Solution

The fourth proportional to 71,291,142.91, 98,379,231.72 and 40,350,647.89 is: 55,682,453.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,291,142.91 : 98,379,231.72 = 40,350,647.89 : x
  2. Step 2: Convert to fraction form
    71,291,142.91/98,379,231.72 = 40,350,647.89/x
  3. Step 3: Cross multiply
    71,291,142.91x = 98,379,231.72 × 40,350,647.89
  4. Step 4: Simplify right side
    71,291,142.91x = 3,969,665,738,425,176.50
  5. Step 5: Solve for x
    x = 3,969,665,738,425,176.50/71,291,142.91
  6. Step 6: Final answer
    x = 55,682,453.34

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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.