Finding the Fourth Proportional to 31,452,818.40, 43,388,241.48 and 21,646,236.96
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Solution
The fourth proportional to 31,452,818.40, 43,388,241.48 and 21,646,236.96 is: 29,860,349.70
Step by Step Solution
- Step 1: Write the proportion equation
31,452,818.40 : 43,388,241.48 = 21,646,236.96 : x - Step 2: Convert to fraction form
31,452,818.40/43,388,241.48 = 21,646,236.96/x - Step 3: Cross multiply
31,452,818.40x = 43,388,241.48 × 21,646,236.96 - Step 4: Simplify right side
31,452,818.40x = 939,192,156,353,781.12 - Step 5: Solve for x
x = 939,192,156,353,781.12/31,452,818.40 - Step 6: Final answer
x = 29,860,349.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.