Finding the Fourth Proportional to 77,985,628.23, 107,623,530.24 and 43,178,319.15
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Solution
The fourth proportional to 77,985,628.23, 107,623,530.24 and 43,178,319.15 is: 59,587,942.58
Step by Step Solution
- Step 1: Write the proportion equation
77,985,628.23 : 107,623,530.24 = 43,178,319.15 : x - Step 2: Convert to fraction form
77,985,628.23/107,623,530.24 = 43,178,319.15/x - Step 3: Cross multiply
77,985,628.23x = 107,623,530.24 × 43,178,319.15 - Step 4: Simplify right side
77,985,628.23x = 4,647,003,136,752,396 - Step 5: Solve for x
x = 4,647,003,136,752,396/77,985,628.23 - Step 6: Final answer
x = 59,587,942.58
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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.