Finding the Fourth Proportional to 72,420,136.20, 108,630,204.30 and 41,809,134.60
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Solution
The fourth proportional to 72,420,136.20, 108,630,204.30 and 41,809,134.60 is: 62,713,701.90
Step by Step Solution
- Step 1: Write the proportion equation
72,420,136.20 : 108,630,204.30 = 41,809,134.60 : x - Step 2: Convert to fraction form
72,420,136.20/108,630,204.30 = 41,809,134.60/x - Step 3: Cross multiply
72,420,136.20x = 108,630,204.30 × 41,809,134.60 - Step 4: Simplify right side
72,420,136.20x = 4,541,734,833,204,199 - Step 5: Solve for x
x = 4,541,734,833,204,199/72,420,136.20 - Step 6: Final answer
x = 62,713,701.90
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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.