Finding the Fourth Proportional to 97,728.68, 134,855.69 and 54,705.38
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Solution
The fourth proportional to 97,728.68, 134,855.69 and 54,705.38 is: 75,487.88
Step by Step Solution
- Step 1: Write the proportion equation
97,728.68 : 134,855.69 = 54,705.38 : x - Step 2: Convert to fraction form
97,728.68/134,855.69 = 54,705.38/x - Step 3: Cross multiply
97,728.68x = 134,855.69 × 54,705.38 - Step 4: Simplify right side
97,728.68x = 7,377,330,818.81 - Step 5: Solve for x
x = 7,377,330,818.81/97,728.68 - Step 6: Final answer
x = 75,487.88
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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.