Finding the Fourth Proportional to 30,891,761.49, 42,627,813 and 18,330,651.26
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Solution
The fourth proportional to 30,891,761.49, 42,627,813 and 18,330,651.26 is: 25,294,626.66
Step by Step Solution
- Step 1: Write the proportion equation
30,891,761.49 : 42,627,813 = 18,330,651.26 : x - Step 2: Convert to fraction form
30,891,761.49/42,627,813 = 18,330,651.26/x - Step 3: Cross multiply
30,891,761.49x = 42,627,813 × 18,330,651.26 - Step 4: Simplify right side
30,891,761.49x = 781,395,573,866,355.25 - Step 5: Solve for x
x = 781,395,573,866,355.25/30,891,761.49 - Step 6: Final answer
x = 25,294,626.66
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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.