Finding the Fourth Proportional to 128,579.60, 192,839.70 and 48,626.12
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Solution
The fourth proportional to 128,579.60, 192,839.70 and 48,626.12 is: 72,927.95
Step by Step Solution
- Step 1: Write the proportion equation
128,579.60 : 192,839.70 = 48,626.12 : x - Step 2: Convert to fraction form
128,579.60/192,839.70 = 48,626.12/x - Step 3: Cross multiply
128,579.60x = 192,839.70 × 48,626.12 - Step 4: Simplify right side
128,579.60x = 9,377,046,392.96 - Step 5: Solve for x
x = 9,377,046,392.96/128,579.60 - Step 6: Final answer
x = 72,927.95
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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.