Finding the Fourth Proportional to 76,133.26, 104,994.48 and 65,374.75
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Solution
The fourth proportional to 76,133.26, 104,994.48 and 65,374.75 is: 90,157.55
Step by Step Solution
- Step 1: Write the proportion equation
76,133.26 : 104,994.48 = 65,374.75 : x - Step 2: Convert to fraction form
76,133.26/104,994.48 = 65,374.75/x - Step 3: Cross multiply
76,133.26x = 104,994.48 × 65,374.75 - Step 4: Simplify right side
76,133.26x = 6,863,987,881.38 - Step 5: Solve for x
x = 6,863,987,881.38/76,133.26 - Step 6: Final answer
x = 90,157.55
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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.