Finding the Fourth Proportional to 31,503,343.40, 47,160,536.70 and 18,717,266.60
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Solution
The fourth proportional to 31,503,343.40, 47,160,536.70 and 18,717,266.60 is: 28,019,766.89
Step by Step Solution
- Step 1: Write the proportion equation
31,503,343.40 : 47,160,536.70 = 18,717,266.60 : x - Step 2: Convert to fraction form
31,503,343.40/47,160,536.70 = 18,717,266.60/x - Step 3: Cross multiply
31,503,343.40x = 47,160,536.70 × 18,717,266.60 - Step 4: Simplify right side
31,503,343.40x = 882,716,338,412,984.38 - Step 5: Solve for x
x = 882,716,338,412,984.38/31,503,343.40 - Step 6: Final answer
x = 28,019,766.89
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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.