Finding the Fourth Proportional to 128,571.60, 192,827.70 and 48,618.12
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Solution
The fourth proportional to 128,571.60, 192,827.70 and 48,618.12 is: 72,915.95
Step by Step Solution
- Step 1: Write the proportion equation
128,571.60 : 192,827.70 = 48,618.12 : x - Step 2: Convert to fraction form
128,571.60/192,827.70 = 48,618.12/x - Step 3: Cross multiply
128,571.60x = 192,827.70 × 48,618.12 - Step 4: Simplify right side
128,571.60x = 9,374,920,257.92 - Step 5: Solve for x
x = 9,374,920,257.92/128,571.60 - Step 6: Final answer
x = 72,915.95
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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.