Finding the Fourth Proportional to 98,530.75, 135,972.45 and 53,818.75
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Solution
The fourth proportional to 98,530.75, 135,972.45 and 53,818.75 is: 74,269.88
Step by Step Solution
- Step 1: Write the proportion equation
98,530.75 : 135,972.45 = 53,818.75 : x - Step 2: Convert to fraction form
98,530.75/135,972.45 = 53,818.75/x - Step 3: Cross multiply
98,530.75x = 135,972.45 × 53,818.75 - Step 4: Simplify right side
98,530.75x = 7,317,867,293.44 - Step 5: Solve for x
x = 7,317,867,293.44/98,530.75 - Step 6: Final answer
x = 74,269.88
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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.