Finding the Fourth Proportional to 98,531.75, 135,974.36 and 53,819.75
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Solution
The fourth proportional to 98,531.75, 135,974.36 and 53,819.75 is: 74,271.55
Step by Step Solution
- Step 1: Write the proportion equation
98,531.75 : 135,974.36 = 53,819.75 : x - Step 2: Convert to fraction form
98,531.75/135,974.36 = 53,819.75/x - Step 3: Cross multiply
98,531.75x = 135,974.36 × 53,819.75 - Step 4: Simplify right side
98,531.75x = 7,318,106,061.61 - Step 5: Solve for x
x = 7,318,106,061.61/98,531.75 - Step 6: Final answer
x = 74,271.55
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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.