Finding the Fourth Proportional to 78,879,438.30, 118,319,157.45 and 36,412,110.30
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Solution
The fourth proportional to 78,879,438.30, 118,319,157.45 and 36,412,110.30 is: 54,618,165.45
Step by Step Solution
- Step 1: Write the proportion equation
78,879,438.30 : 118,319,157.45 = 36,412,110.30 : x - Step 2: Convert to fraction form
78,879,438.30/118,319,157.45 = 36,412,110.30/x - Step 3: Cross multiply
78,879,438.30x = 118,319,157.45 × 36,412,110.30 - Step 4: Simplify right side
78,879,438.30x = 4,308,250,211,672,466.50 - Step 5: Solve for x
x = 4,308,250,211,672,466.50/78,879,438.30 - Step 6: Final answer
x = 54,618,165.45
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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.