Finding the Fourth Proportional to 86,271.92, 129,428.61 and 27,107.54
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Solution
The fourth proportional to 86,271.92, 129,428.61 and 27,107.54 is: 40,667.82
Step by Step Solution
- Step 1: Write the proportion equation
86,271.92 : 129,428.61 = 27,107.54 : x - Step 2: Convert to fraction form
86,271.92/129,428.61 = 27,107.54/x - Step 3: Cross multiply
86,271.92x = 129,428.61 × 27,107.54 - Step 4: Simplify right side
86,271.92x = 3,508,490,959.28 - Step 5: Solve for x
x = 3,508,490,959.28/86,271.92 - Step 6: Final answer
x = 40,667.82
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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.