Home / 47,975.31-71,957.43-12,912.21

Finding the Fourth Proportional to 47,975.31, 71,957.43 and 12,912.21

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Solution

The fourth proportional to 47,975.31, 71,957.43 and 12,912.21 is: 19,366.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,975.31 : 71,957.43 = 12,912.21 : x
  2. Step 2: Convert to fraction form
    47,975.31/71,957.43 = 12,912.21/x
  3. Step 3: Cross multiply
    47,975.31x = 71,957.43 × 12,912.21
  4. Step 4: Simplify right side
    47,975.31x = 929,129,447.22
  5. Step 5: Solve for x
    x = 929,129,447.22/47,975.31
  6. Step 6: Final answer
    x = 19,366.83

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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.