Home / 77,145.21-115,568.37-43,764.30

Finding the Fourth Proportional to 77,145.21, 115,568.37 and 43,764.30

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Solution

The fourth proportional to 77,145.21, 115,568.37 and 43,764.30 is: 65,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,145.21 : 115,568.37 = 43,764.30 : x
  2. Step 2: Convert to fraction form
    77,145.21/115,568.37 = 43,764.30/x
  3. Step 3: Cross multiply
    77,145.21x = 115,568.37 × 43,764.30
  4. Step 4: Simplify right side
    77,145.21x = 5,057,768,815.19
  5. Step 5: Solve for x
    x = 5,057,768,815.19/77,145.21
  6. Step 6: Final answer
    x = 65,561.67

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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.