Home / 51,915.36-77,879.55-20,321.34

Finding the Fourth Proportional to 51,915.36, 77,879.55 and 20,321.34

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Solution

The fourth proportional to 51,915.36, 77,879.55 and 20,321.34 is: 30,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,915.36 : 77,879.55 = 20,321.34 : x
  2. Step 2: Convert to fraction form
    51,915.36/77,879.55 = 20,321.34/x
  3. Step 3: Cross multiply
    51,915.36x = 77,879.55 × 20,321.34
  4. Step 4: Simplify right side
    51,915.36x = 1,582,616,814.60
  5. Step 5: Solve for x
    x = 1,582,616,814.60/51,915.36
  6. Step 6: Final answer
    x = 30,484.56

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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.