Finding the Fourth Proportional to 68,902,120.80, 103,353,181.20 and 48,494,786.40
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Solution
The fourth proportional to 68,902,120.80, 103,353,181.20 and 48,494,786.40 is: 72,742,179.60
Step by Step Solution
- Step 1: Write the proportion equation
68,902,120.80 : 103,353,181.20 = 48,494,786.40 : x - Step 2: Convert to fraction form
68,902,120.80/103,353,181.20 = 48,494,786.40/x - Step 3: Cross multiply
68,902,120.80x = 103,353,181.20 × 48,494,786.40 - Step 4: Simplify right side
68,902,120.80x = 5,012,090,446,054,496 - Step 5: Solve for x
x = 5,012,090,446,054,496/68,902,120.80 - Step 6: Final answer
x = 72,742,179.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.