Home / 47,879.56-71,774.94-21,211.40

Finding the Fourth Proportional to 47,879.56, 71,774.94 and 21,211.40

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Solution

The fourth proportional to 47,879.56, 71,774.94 and 21,211.40 is: 31,797.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,879.56 : 71,774.94 = 21,211.40 : x
  2. Step 2: Convert to fraction form
    47,879.56/71,774.94 = 21,211.40/x
  3. Step 3: Cross multiply
    47,879.56x = 71,774.94 × 21,211.40
  4. Step 4: Simplify right side
    47,879.56x = 1,522,446,962.32
  5. Step 5: Solve for x
    x = 1,522,446,962.32/47,879.56
  6. Step 6: Final answer
    x = 31,797.43

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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.