Finding the Fourth Proportional to 68,778,149.36, 103,167,205.20 and 47,147,172.05
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Solution
The fourth proportional to 68,778,149.36, 103,167,205.20 and 47,147,172.05 is: 70,720,745.17
Step by Step Solution
- Step 1: Write the proportion equation
68,778,149.36 : 103,167,205.20 = 47,147,172.05 : x - Step 2: Convert to fraction form
68,778,149.36/103,167,205.20 = 47,147,172.05/x - Step 3: Cross multiply
68,778,149.36x = 103,167,205.20 × 47,147,172.05 - Step 4: Simplify right side
68,778,149.36x = 4,864,041,973,739,973 - Step 5: Solve for x
x = 4,864,041,973,739,973/68,778,149.36 - Step 6: Final answer
x = 70,720,745.17
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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.