Home / 47,991.52-71,982.41-12,934.72

Finding the Fourth Proportional to 47,991.52, 71,982.41 and 12,934.72

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Solution

The fourth proportional to 47,991.52, 71,982.41 and 12,934.72 is: 19,400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,991.52 : 71,982.41 = 12,934.72 : x
  2. Step 2: Convert to fraction form
    47,991.52/71,982.41 = 12,934.72/x
  3. Step 3: Cross multiply
    47,991.52x = 71,982.41 × 12,934.72
  4. Step 4: Simplify right side
    47,991.52x = 931,071,958.36
  5. Step 5: Solve for x
    x = 931,071,958.36/47,991.52
  6. Step 6: Final answer
    x = 19,400.76

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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.