Finding the Fourth Proportional to 68,780.70, 103,200.72 and 37,212.99
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Solution
The fourth proportional to 68,780.70, 103,200.72 and 37,212.99 is: 55,835.54
Step by Step Solution
- Step 1: Write the proportion equation
68,780.70 : 103,200.72 = 37,212.99 : x - Step 2: Convert to fraction form
68,780.70/103,200.72 = 37,212.99/x - Step 3: Cross multiply
68,780.70x = 103,200.72 × 37,212.99 - Step 4: Simplify right side
68,780.70x = 3,840,407,361.35 - Step 5: Solve for x
x = 3,840,407,361.35/68,780.70 - Step 6: Final answer
x = 55,835.54
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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.