Finding the Fourth Proportional to 40,129,998.09, 55,379,680.79 and 21,795,283.59
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Solution
The fourth proportional to 40,129,998.09, 55,379,680.79 and 21,795,283.59 is: 30,077,645.29
Step by Step Solution
- Step 1: Write the proportion equation
40,129,998.09 : 55,379,680.79 = 21,795,283.59 : x - Step 2: Convert to fraction form
40,129,998.09/55,379,680.79 = 21,795,283.59/x - Step 3: Cross multiply
40,129,998.09x = 55,379,680.79 × 21,795,283.59 - Step 4: Simplify right side
40,129,998.09x = 1,207,015,847,941,725.25 - Step 5: Solve for x
x = 1,207,015,847,941,725.25/40,129,998.09 - Step 6: Final answer
x = 30,077,645.29
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1.5x scale
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.