Finding the Fourth Proportional to 74,213.36, 102,354.72 and 65,241.68
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Solution
The fourth proportional to 74,213.36, 102,354.72 and 65,241.68 is: 89,981.02
Step by Step Solution
- Step 1: Write the proportion equation
74,213.36 : 102,354.72 = 65,241.68 : x - Step 2: Convert to fraction form
74,213.36/102,354.72 = 65,241.68/x - Step 3: Cross multiply
74,213.36x = 102,354.72 × 65,241.68 - Step 4: Simplify right side
74,213.36x = 6,677,793,888.73 - Step 5: Solve for x
x = 6,677,793,888.73/74,213.36 - Step 6: Final answer
x = 89,981.02
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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.