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Finding the Fourth Proportional to 79,322.70, 109,435.14 and 50,643.44

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Solution

The fourth proportional to 79,322.70, 109,435.14 and 50,643.44 is: 69,868.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,322.70 : 109,435.14 = 50,643.44 : x
  2. Step 2: Convert to fraction form
    79,322.70/109,435.14 = 50,643.44/x
  3. Step 3: Cross multiply
    79,322.70x = 109,435.14 × 50,643.44
  4. Step 4: Simplify right side
    79,322.70x = 5,542,171,399.31
  5. Step 5: Solve for x
    x = 5,542,171,399.31/79,322.70
  6. Step 6: Final answer
    x = 69,868.67

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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.