Finding the Fourth Proportional to 86,355.24, 129,451.74 and 30,160.68
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Solution
The fourth proportional to 86,355.24, 129,451.74 and 30,160.68 is: 45,212.69
Step by Step Solution
- Step 1: Write the proportion equation
86,355.24 : 129,451.74 = 30,160.68 : x - Step 2: Convert to fraction form
86,355.24/129,451.74 = 30,160.68/x - Step 3: Cross multiply
86,355.24x = 129,451.74 × 30,160.68 - Step 4: Simplify right side
86,355.24x = 3,904,352,505.58 - Step 5: Solve for x
x = 3,904,352,505.58/86,355.24 - Step 6: Final answer
x = 45,212.69
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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.