Finding the Fourth Proportional to 76,705,122.60, 115,128,542.70 and 38,394,131.40
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Solution
The fourth proportional to 76,705,122.60, 115,128,542.70 and 38,394,131.40 is: 57,626,664.90
Step by Step Solution
- Step 1: Write the proportion equation
76,705,122.60 : 115,128,542.70 = 38,394,131.40 : x - Step 2: Convert to fraction form
76,705,122.60/115,128,542.70 = 38,394,131.40/x - Step 3: Cross multiply
76,705,122.60x = 115,128,542.70 × 38,394,131.40 - Step 4: Simplify right side
76,705,122.60x = 4,420,260,396,314,310.50 - Step 5: Solve for x
x = 4,420,260,396,314,310.50/76,705,122.60 - Step 6: Final answer
x = 57,626,664.90
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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.