Finding the Fourth Proportional to 86,129.02, 129,137.95 and 41,126.02
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Solution
The fourth proportional to 86,129.02, 129,137.95 and 41,126.02 is: 61,662.49
Step by Step Solution
- Step 1: Write the proportion equation
86,129.02 : 129,137.95 = 41,126.02 : x - Step 2: Convert to fraction form
86,129.02/129,137.95 = 41,126.02/x - Step 3: Cross multiply
86,129.02x = 129,137.95 × 41,126.02 - Step 4: Simplify right side
86,129.02x = 5,310,929,914.46 - Step 5: Solve for x
x = 5,310,929,914.46/86,129.02 - Step 6: Final answer
x = 61,662.49
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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.