Home / 39,979.20-59,930.40-31,089.60

Finding the Fourth Proportional to 39,979.20, 59,930.40 and 31,089.60

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Solution

The fourth proportional to 39,979.20, 59,930.40 and 31,089.60 is: 46,604.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.20 : 59,930.40 = 31,089.60 : x
  2. Step 2: Convert to fraction form
    39,979.20/59,930.40 = 31,089.60/x
  3. Step 3: Cross multiply
    39,979.20x = 59,930.40 × 31,089.60
  4. Step 4: Simplify right side
    39,979.20x = 1,863,212,163.84
  5. Step 5: Solve for x
    x = 1,863,212,163.84/39,979.20
  6. Step 6: Final answer
    x = 46,604.54

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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.