Finding the Fourth Proportional to 88,921.80, 122,705.82 and 48,634.70
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Solution
The fourth proportional to 88,921.80, 122,705.82 and 48,634.70 is: 67,112.45
Step by Step Solution
- Step 1: Write the proportion equation
88,921.80 : 122,705.82 = 48,634.70 : x - Step 2: Convert to fraction form
88,921.80/122,705.82 = 48,634.70/x - Step 3: Cross multiply
88,921.80x = 122,705.82 × 48,634.70 - Step 4: Simplify right side
88,921.80x = 5,967,760,130.42 - Step 5: Solve for x
x = 5,967,760,130.42/88,921.80 - Step 6: Final answer
x = 67,112.45
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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.