Finding the Fourth Proportional to 78,761,072.80, 117,952,652.40 and 38,324,317.60
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Solution
The fourth proportional to 78,761,072.80, 117,952,652.40 and 38,324,317.60 is: 57,394,531.99
Step by Step Solution
- Step 1: Write the proportion equation
78,761,072.80 : 117,952,652.40 = 38,324,317.60 : x - Step 2: Convert to fraction form
78,761,072.80/117,952,652.40 = 38,324,317.60/x - Step 3: Cross multiply
78,761,072.80x = 117,952,652.40 × 38,324,317.60 - Step 4: Simplify right side
78,761,072.80x = 4,520,454,912,340,003 - Step 5: Solve for x
x = 4,520,454,912,340,003/78,761,072.80 - Step 6: Final answer
x = 57,394,531.99
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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.