Home / 49,405.60-74,072.40-19,808.80

Finding the Fourth Proportional to 49,405.60, 74,072.40 and 19,808.80

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Solution

The fourth proportional to 49,405.60, 74,072.40 and 19,808.80 is: 29,698.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,405.60 : 74,072.40 = 19,808.80 : x
  2. Step 2: Convert to fraction form
    49,405.60/74,072.40 = 19,808.80/x
  3. Step 3: Cross multiply
    49,405.60x = 74,072.40 × 19,808.80
  4. Step 4: Simplify right side
    49,405.60x = 1,467,285,357.12
  5. Step 5: Solve for x
    x = 1,467,285,357.12/49,405.60
  6. Step 6: Final answer
    x = 29,698.77

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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.