Finding the Fourth Proportional to 31,541,718.05, 43,528,137.80 and 18,498,384.44
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Solution
The fourth proportional to 31,541,718.05, 43,528,137.80 and 18,498,384.44 is: 25,528,102.99
Step by Step Solution
- Step 1: Write the proportion equation
31,541,718.05 : 43,528,137.80 = 18,498,384.44 : x - Step 2: Convert to fraction form
31,541,718.05/43,528,137.80 = 18,498,384.44/x - Step 3: Cross multiply
31,541,718.05x = 43,528,137.80 × 18,498,384.44 - Step 4: Simplify right side
31,541,718.05x = 805,200,226,981,695.88 - Step 5: Solve for x
x = 805,200,226,981,695.88/31,541,718.05 - Step 6: Final answer
x = 25,528,102.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.