Finding the Fourth Proportional to 86,285.69, 129,466.23 and 30,166.09
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Solution
The fourth proportional to 86,285.69, 129,466.23 and 30,166.09 is: 45,262.31
Step by Step Solution
- Step 1: Write the proportion equation
86,285.69 : 129,466.23 = 30,166.09 : x - Step 2: Convert to fraction form
86,285.69/129,466.23 = 30,166.09/x - Step 3: Cross multiply
86,285.69x = 129,466.23 × 30,166.09 - Step 4: Simplify right side
86,285.69x = 3,905,489,622.48 - Step 5: Solve for x
x = 3,905,489,622.48/86,285.69 - Step 6: Final answer
x = 45,262.31
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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.