Finding the Fourth Proportional to 103,634.19, 155,454.62 and 28,755.09
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Solution
The fourth proportional to 103,634.19, 155,454.62 and 28,755.09 is: 43,133.56
Step by Step Solution
- Step 1: Write the proportion equation
103,634.19 : 155,454.62 = 28,755.09 : x - Step 2: Convert to fraction form
103,634.19/155,454.62 = 28,755.09/x - Step 3: Cross multiply
103,634.19x = 155,454.62 × 28,755.09 - Step 4: Simplify right side
103,634.19x = 4,470,111,445.24 - Step 5: Solve for x
x = 4,470,111,445.24/103,634.19 - Step 6: Final answer
x = 43,133.56
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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.