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Finding the Fourth Proportional to 79,467.87, 109,676.16 and 51,255.57

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Solution

The fourth proportional to 79,467.87, 109,676.16 and 51,255.57 is: 70,739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,467.87 : 109,676.16 = 51,255.57 : x
  2. Step 2: Convert to fraction form
    79,467.87/109,676.16 = 51,255.57/x
  3. Step 3: Cross multiply
    79,467.87x = 109,676.16 × 51,255.57
  4. Step 4: Simplify right side
    79,467.87x = 5,621,514,096.21
  5. Step 5: Solve for x
    x = 5,621,514,096.21/79,467.87
  6. Step 6: Final answer
    x = 70,739.46

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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.