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Finding the Fourth Proportional to 74,779.50, 103,203 and 41,245.50

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Solution

The fourth proportional to 74,779.50, 103,203 and 41,245.50 is: 56,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,779.50 : 103,203 = 41,245.50 : x
  2. Step 2: Convert to fraction form
    74,779.50/103,203 = 41,245.50/x
  3. Step 3: Cross multiply
    74,779.50x = 103,203 × 41,245.50
  4. Step 4: Simplify right side
    74,779.50x = 4,256,659,336.50
  5. Step 5: Solve for x
    x = 4,256,659,336.50/74,779.50
  6. Step 6: Final answer
    x = 56,922.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.