Home / 49,617.60-74,390.40-20,020.80

Finding the Fourth Proportional to 49,617.60, 74,390.40 and 20,020.80

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Solution

The fourth proportional to 49,617.60, 74,390.40 and 20,020.80 is: 30,016.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,617.60 : 74,390.40 = 20,020.80 : x
  2. Step 2: Convert to fraction form
    49,617.60/74,390.40 = 20,020.80/x
  3. Step 3: Cross multiply
    49,617.60x = 74,390.40 × 20,020.80
  4. Step 4: Simplify right side
    49,617.60x = 1,489,355,320.32
  5. Step 5: Solve for x
    x = 1,489,355,320.32/49,617.60
  6. Step 6: Final answer
    x = 30,016.67

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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.