Home / 40,109.22-55,351.62-21,961.67

Finding the Fourth Proportional to 40,109.22, 55,351.62 and 21,961.67

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Solution

The fourth proportional to 40,109.22, 55,351.62 and 21,961.67 is: 30,307.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,109.22 : 55,351.62 = 21,961.67 : x
  2. Step 2: Convert to fraction form
    40,109.22/55,351.62 = 21,961.67/x
  3. Step 3: Cross multiply
    40,109.22x = 55,351.62 × 21,961.67
  4. Step 4: Simplify right side
    40,109.22x = 1,215,613,735.65
  5. Step 5: Solve for x
    x = 1,215,613,735.65/40,109.22
  6. Step 6: Final answer
    x = 30,307.59

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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.