Finding the Fourth Proportional to 85,940.20, 128,879.41 and 29,765.19
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Solution
The fourth proportional to 85,940.20, 128,879.41 and 29,765.19 is: 44,637.09
Step by Step Solution
- Step 1: Write the proportion equation
85,940.20 : 128,879.41 = 29,765.19 : x - Step 2: Convert to fraction form
85,940.20/128,879.41 = 29,765.19/x - Step 3: Cross multiply
85,940.20x = 128,879.41 × 29,765.19 - Step 4: Simplify right side
85,940.20x = 3,836,120,125.74 - Step 5: Solve for x
x = 3,836,120,125.74/85,940.20 - Step 6: Final answer
x = 44,637.09
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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.