Finding the Fourth Proportional to 86,210.42, 129,231.76 and 41,220.09
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Solution
The fourth proportional to 86,210.42, 129,231.76 and 41,220.09 is: 61,790.03
Step by Step Solution
- Step 1: Write the proportion equation
86,210.42 : 129,231.76 = 41,220.09 : x - Step 2: Convert to fraction form
86,210.42/129,231.76 = 41,220.09/x - Step 3: Cross multiply
86,210.42x = 129,231.76 × 41,220.09 - Step 4: Simplify right side
86,210.42x = 5,326,944,234.95 - Step 5: Solve for x
x = 5,326,944,234.95/86,210.42 - Step 6: Final answer
x = 61,790.03
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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.