Finding the Fourth Proportional to 102,729.72, 141,724.80 and 62,436.99
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Solution
The fourth proportional to 102,729.72, 141,724.80 and 62,436.99 is: 86,137.39
Step by Step Solution
- Step 1: Write the proportion equation
102,729.72 : 141,724.80 = 62,436.99 : x - Step 2: Convert to fraction form
102,729.72/141,724.80 = 62,436.99/x - Step 3: Cross multiply
102,729.72x = 141,724.80 × 62,436.99 - Step 4: Simplify right side
102,729.72x = 8,848,869,920.35 - Step 5: Solve for x
x = 8,848,869,920.35/102,729.72 - Step 6: Final answer
x = 86,137.39
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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.