Finding the Fourth Proportional to 78,424,147.40, 117,528,603.12 and 49,618,716.80
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Solution
The fourth proportional to 78,424,147.40, 117,528,603.12 and 49,618,716.80 is: 74,359,985.64
Step by Step Solution
- Step 1: Write the proportion equation
78,424,147.40 : 117,528,603.12 = 49,618,716.80 : x - Step 2: Convert to fraction form
78,424,147.40/117,528,603.12 = 49,618,716.80/x - Step 3: Cross multiply
78,424,147.40x = 117,528,603.12 × 49,618,716.80 - Step 4: Simplify right side
78,424,147.40x = 5,831,618,474,110,876 - Step 5: Solve for x
x = 5,831,618,474,110,876/78,424,147.40 - Step 6: Final answer
x = 74,359,985.64
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.