Home / 47,881.26-71,788.58-21,212.78

Finding the Fourth Proportional to 47,881.26, 71,788.58 and 21,212.78

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Solution

The fourth proportional to 47,881.26, 71,788.58 and 21,212.78 is: 31,804.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,881.26 : 71,788.58 = 21,212.78 : x
  2. Step 2: Convert to fraction form
    47,881.26/71,788.58 = 21,212.78/x
  3. Step 3: Cross multiply
    47,881.26x = 71,788.58 × 21,212.78
  4. Step 4: Simplify right side
    47,881.26x = 1,522,835,354.05
  5. Step 5: Solve for x
    x = 1,522,835,354.05/47,881.26
  6. Step 6: Final answer
    x = 31,804.41

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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.