Home / 45,243.72-67,865.73-18,930

Finding the Fourth Proportional to 45,243.72, 67,865.73 and 18,930

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Solution

The fourth proportional to 45,243.72, 67,865.73 and 18,930 is: 28,395.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,243.72 : 67,865.73 = 18,930 : x
  2. Step 2: Convert to fraction form
    45,243.72/67,865.73 = 18,930/x
  3. Step 3: Cross multiply
    45,243.72x = 67,865.73 × 18,930
  4. Step 4: Simplify right side
    45,243.72x = 1,284,698,268.90
  5. Step 5: Solve for x
    x = 1,284,698,268.90/45,243.72
  6. Step 6: Final answer
    x = 28,395.06

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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.