Finding the Fourth Proportional to 81,163.32, 121,619.39 and 56,252.03
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Solution
The fourth proportional to 81,163.32, 121,619.39 and 56,252.03 is: 84,290.99
Step by Step Solution
- Step 1: Write the proportion equation
81,163.32 : 121,619.39 = 56,252.03 : x - Step 2: Convert to fraction form
81,163.32/121,619.39 = 56,252.03/x - Step 3: Cross multiply
81,163.32x = 121,619.39 × 56,252.03 - Step 4: Simplify right side
81,163.32x = 6,841,336,685.50 - Step 5: Solve for x
x = 6,841,336,685.50/81,163.32 - Step 6: Final answer
x = 84,290.99
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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.