Finding the Fourth Proportional to 86,345.19, 129,434.67 and 44,245.17
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Solution
The fourth proportional to 86,345.19, 129,434.67 and 44,245.17 is: 66,325.17
Step by Step Solution
- Step 1: Write the proportion equation
86,345.19 : 129,434.67 = 44,245.17 : x - Step 2: Convert to fraction form
86,345.19/129,434.67 = 44,245.17/x - Step 3: Cross multiply
86,345.19x = 129,434.67 × 44,245.17 - Step 4: Simplify right side
86,345.19x = 5,726,858,978.04 - Step 5: Solve for x
x = 5,726,858,978.04/86,345.19 - Step 6: Final answer
x = 66,325.17
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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.