Finding the Fourth Proportional to 215,830.60, 323,770.20 and 66,069.70
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Solution
The fourth proportional to 215,830.60, 323,770.20 and 66,069.70 is: 99,111.99
Step by Step Solution
- Step 1: Write the proportion equation
215,830.60 : 323,770.20 = 66,069.70 : x - Step 2: Convert to fraction form
215,830.60/323,770.20 = 66,069.70/x - Step 3: Cross multiply
215,830.60x = 323,770.20 × 66,069.70 - Step 4: Simplify right side
215,830.60x = 21,391,399,982.94 - Step 5: Solve for x
x = 21,391,399,982.94/215,830.60 - Step 6: Final answer
x = 99,111.99
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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.