Finding the Fourth Proportional to 31,539,231.05, 43,515,913.97 and 18,479,473.07
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Solution
The fourth proportional to 31,539,231.05, 43,515,913.97 and 18,479,473.07 is: 25,496,853.71
Step by Step Solution
- Step 1: Write the proportion equation
31,539,231.05 : 43,515,913.97 = 18,479,473.07 : x - Step 2: Convert to fraction form
31,539,231.05/43,515,913.97 = 18,479,473.07/x - Step 3: Cross multiply
31,539,231.05x = 43,515,913.97 × 18,479,473.07 - Step 4: Simplify right side
31,539,231.05x = 804,151,160,153,670.88 - Step 5: Solve for x
x = 804,151,160,153,670.88/31,539,231.05 - Step 6: Final answer
x = 25,496,853.71
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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.