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Finding the Fourth Proportional to 35,240.69, 48,629.34 and 20,131.22

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Solution

The fourth proportional to 35,240.69, 48,629.34 and 20,131.22 is: 27,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,240.69 : 48,629.34 = 20,131.22 : x
  2. Step 2: Convert to fraction form
    35,240.69/48,629.34 = 20,131.22/x
  3. Step 3: Cross multiply
    35,240.69x = 48,629.34 × 20,131.22
  4. Step 4: Simplify right side
    35,240.69x = 978,967,698.85
  5. Step 5: Solve for x
    x = 978,967,698.85/35,240.69
  6. Step 6: Final answer
    x = 27,779.47

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1.5x scale

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.