Home / 51,399.63-77,099.82-18,120.33

Finding the Fourth Proportional to 51,399.63, 77,099.82 and 18,120.33

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Solution

The fourth proportional to 51,399.63, 77,099.82 and 18,120.33 is: 27,180.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,399.63 : 77,099.82 = 18,120.33 : x
  2. Step 2: Convert to fraction form
    51,399.63/77,099.82 = 18,120.33/x
  3. Step 3: Cross multiply
    51,399.63x = 77,099.82 × 18,120.33
  4. Step 4: Simplify right side
    51,399.63x = 1,397,074,181.34
  5. Step 5: Solve for x
    x = 1,397,074,181.34/51,399.63
  6. Step 6: Final answer
    x = 27,180.63

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1.5x scale

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.