Home / 47,478.79-71,185.38-20,811.97

Finding the Fourth Proportional to 47,478.79, 71,185.38 and 20,811.97

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Solution

The fourth proportional to 47,478.79, 71,185.38 and 20,811.97 is: 31,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,478.79 : 71,185.38 = 20,811.97 : x
  2. Step 2: Convert to fraction form
    47,478.79/71,185.38 = 20,811.97/x
  3. Step 3: Cross multiply
    47,478.79x = 71,185.38 × 20,811.97
  4. Step 4: Simplify right side
    47,478.79x = 1,481,507,993.00
  5. Step 5: Solve for x
    x = 1,481,507,993.00/47,478.79
  6. Step 6: Final answer
    x = 31,203.58

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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.