Finding the Fourth Proportional to 38,498,990.92, 53,128,620.30 and 21,095,194.84
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Solution
The fourth proportional to 38,498,990.92, 53,128,620.30 and 21,095,194.84 is: 29,111,375.91
Step by Step Solution
- Step 1: Write the proportion equation
38,498,990.92 : 53,128,620.30 = 21,095,194.84 : x - Step 2: Convert to fraction form
38,498,990.92/53,128,620.30 = 21,095,194.84/x - Step 3: Cross multiply
38,498,990.92x = 53,128,620.30 × 21,095,194.84 - Step 4: Simplify right side
38,498,990.92x = 1,120,758,596,808,879.12 - Step 5: Solve for x
x = 1,120,758,596,808,879.12/38,498,990.92 - Step 6: Final answer
x = 29,111,375.91
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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.