Home / 66,742.36-100,138.15-35,151.14

Finding the Fourth Proportional to 66,742.36, 100,138.15 and 35,151.14

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Solution

The fourth proportional to 66,742.36, 100,138.15 and 35,151.14 is: 52,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,742.36 : 100,138.15 = 35,151.14 : x
  2. Step 2: Convert to fraction form
    66,742.36/100,138.15 = 35,151.14/x
  3. Step 3: Cross multiply
    66,742.36x = 100,138.15 × 35,151.14
  4. Step 4: Simplify right side
    66,742.36x = 3,519,970,129.99
  5. Step 5: Solve for x
    x = 3,519,970,129.99/66,742.36
  6. Step 6: Final answer
    x = 52,739.67

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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.