Finding the Fourth Proportional to 75,171.74, 112,713.81 and 28,428.26
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Solution
The fourth proportional to 75,171.74, 112,713.81 and 28,428.26 is: 42,625.83
Step by Step Solution
- Step 1: Write the proportion equation
75,171.74 : 112,713.81 = 28,428.26 : x - Step 2: Convert to fraction form
75,171.74/112,713.81 = 28,428.26/x - Step 3: Cross multiply
75,171.74x = 112,713.81 × 28,428.26 - Step 4: Simplify right side
75,171.74x = 3,204,257,496.27 - Step 5: Solve for x
x = 3,204,257,496.27/75,171.74 - Step 6: Final answer
x = 42,625.83
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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.