Finding the Fourth Proportional to 88,639.88, 122,368.16 and 68,451.44
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Solution
The fourth proportional to 88,639.88, 122,368.16 and 68,451.44 is: 94,497.84
Step by Step Solution
- Step 1: Write the proportion equation
88,639.88 : 122,368.16 = 68,451.44 : x - Step 2: Convert to fraction form
88,639.88/122,368.16 = 68,451.44/x - Step 3: Cross multiply
88,639.88x = 122,368.16 × 68,451.44 - Step 4: Simplify right side
88,639.88x = 8,376,276,762.15 - Step 5: Solve for x
x = 8,376,276,762.15/88,639.88 - Step 6: Final answer
x = 94,497.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.