Finding the Fourth Proportional to 81,945,462.60, 122,918,193.90 and 41,130,793.80
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Solution
The fourth proportional to 81,945,462.60, 122,918,193.90 and 41,130,793.80 is: 61,696,190.70
Step by Step Solution
- Step 1: Write the proportion equation
81,945,462.60 : 122,918,193.90 = 41,130,793.80 : x - Step 2: Convert to fraction form
81,945,462.60/122,918,193.90 = 41,130,793.80/x - Step 3: Cross multiply
81,945,462.60x = 122,918,193.90 × 41,130,793.80 - Step 4: Simplify right side
81,945,462.60x = 5,055,722,887,569,318 - Step 5: Solve for x
x = 5,055,722,887,569,318/81,945,462.60 - Step 6: Final answer
x = 61,696,190.70
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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.