Finding the Fourth Proportional to 85,860,284.70, 128,790,427.05 and 51,422,907.90
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Solution
The fourth proportional to 85,860,284.70, 128,790,427.05 and 51,422,907.90 is: 77,134,361.85
Step by Step Solution
- Step 1: Write the proportion equation
85,860,284.70 : 128,790,427.05 = 51,422,907.90 : x - Step 2: Convert to fraction form
85,860,284.70/128,790,427.05 = 51,422,907.90/x - Step 3: Cross multiply
85,860,284.70x = 128,790,427.05 × 51,422,907.90 - Step 4: Simplify right side
85,860,284.70x = 6,622,778,268,593,818 - Step 5: Solve for x
x = 6,622,778,268,593,818/85,860,284.70 - Step 6: Final answer
x = 77,134,361.85
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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.