Finding the Fourth Proportional to 85,420,139.68, 117,879,208.56 and 46,261,015.84
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Solution
The fourth proportional to 85,420,139.68, 117,879,208.56 and 46,261,015.84 is: 63,839,885.47
Step by Step Solution
- Step 1: Write the proportion equation
85,420,139.68 : 117,879,208.56 = 46,261,015.84 : x - Step 2: Convert to fraction form
85,420,139.68/117,879,208.56 = 46,261,015.84/x - Step 3: Cross multiply
85,420,139.68x = 117,879,208.56 × 46,261,015.84 - Step 4: Simplify right side
85,420,139.68x = 5,453,211,934,400,824 - Step 5: Solve for x
x = 5,453,211,934,400,824/85,420,139.68 - Step 6: Final answer
x = 63,839,885.47
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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.