Finding the Fourth Proportional to 76,642.62, 115,019.82 and 39,233.99
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Solution
The fourth proportional to 76,642.62, 115,019.82 and 39,233.99 is: 58,879.59
Step by Step Solution
- Step 1: Write the proportion equation
76,642.62 : 115,019.82 = 39,233.99 : x - Step 2: Convert to fraction form
76,642.62/115,019.82 = 39,233.99/x - Step 3: Cross multiply
76,642.62x = 115,019.82 × 39,233.99 - Step 4: Simplify right side
76,642.62x = 4,512,685,892.58 - Step 5: Solve for x
x = 4,512,685,892.58/76,642.62 - Step 6: Final answer
x = 58,879.59
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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.