Finding the Fourth Proportional to 86,428.76, 129,643.16 and 27,269.06
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Solution
The fourth proportional to 86,428.76, 129,643.16 and 27,269.06 is: 40,903.59
Step by Step Solution
- Step 1: Write the proportion equation
86,428.76 : 129,643.16 = 27,269.06 : x - Step 2: Convert to fraction form
86,428.76/129,643.16 = 27,269.06/x - Step 3: Cross multiply
86,428.76x = 129,643.16 × 27,269.06 - Step 4: Simplify right side
86,428.76x = 3,535,246,324.07 - Step 5: Solve for x
x = 3,535,246,324.07/86,428.76 - Step 6: Final answer
x = 40,903.59
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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.