Finding the Fourth Proportional to 98,530.62, 135,972.80 and 53,818.62
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Solution
The fourth proportional to 98,530.62, 135,972.80 and 53,818.62 is: 74,269.99
Step by Step Solution
- Step 1: Write the proportion equation
98,530.62 : 135,972.80 = 53,818.62 : x - Step 2: Convert to fraction form
98,530.62/135,972.80 = 53,818.62/x - Step 3: Cross multiply
98,530.62x = 135,972.80 × 53,818.62 - Step 4: Simplify right side
98,530.62x = 7,317,868,453.54 - Step 5: Solve for x
x = 7,317,868,453.54/98,530.62 - Step 6: Final answer
x = 74,269.99
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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.