Finding the Fourth Proportional to 91,308.84, 136,928.70 and 38,743.08
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Solution
The fourth proportional to 91,308.84, 136,928.70 and 38,743.08 is: 58,099.96
Step by Step Solution
- Step 1: Write the proportion equation
91,308.84 : 136,928.70 = 38,743.08 : x - Step 2: Convert to fraction form
91,308.84/136,928.70 = 38,743.08/x - Step 3: Cross multiply
91,308.84x = 136,928.70 × 38,743.08 - Step 4: Simplify right side
91,308.84x = 5,305,039,578.40 - Step 5: Solve for x
x = 5,305,039,578.40/91,308.84 - Step 6: Final answer
x = 58,099.96
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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.