Finding the Fourth Proportional to 128,578.47, 192,880.38 and 44,327.52
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Solution
The fourth proportional to 128,578.47, 192,880.38 and 44,327.52 is: 66,495.65
Step by Step Solution
- Step 1: Write the proportion equation
128,578.47 : 192,880.38 = 44,327.52 : x - Step 2: Convert to fraction form
128,578.47/192,880.38 = 44,327.52/x - Step 3: Cross multiply
128,578.47x = 192,880.38 × 44,327.52 - Step 4: Simplify right side
128,578.47x = 8,549,908,902.06 - Step 5: Solve for x
x = 8,549,908,902.06/128,578.47 - Step 6: Final answer
x = 66,495.65
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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.