Finding the Fourth Proportional to 88,631.53, 122,356.66 and 68,443.09
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Solution
The fourth proportional to 88,631.53, 122,356.66 and 68,443.09 is: 94,486.33
Step by Step Solution
- Step 1: Write the proportion equation
88,631.53 : 122,356.66 = 68,443.09 : x - Step 2: Convert to fraction form
88,631.53/122,356.66 = 68,443.09/x - Step 3: Cross multiply
88,631.53x = 122,356.66 × 68,443.09 - Step 4: Simplify right side
88,631.53x = 8,374,467,550.26 - Step 5: Solve for x
x = 8,374,467,550.26/88,631.53 - Step 6: Final answer
x = 94,486.33
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1.5x scale
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.