Finding the Fourth Proportional to 77,985,625.23, 107,623,526.10 and 43,178,316.15
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Solution
The fourth proportional to 77,985,625.23, 107,623,526.10 and 43,178,316.15 is: 59,587,938.44
Step by Step Solution
- Step 1: Write the proportion equation
77,985,625.23 : 107,623,526.10 = 43,178,316.15 : x - Step 2: Convert to fraction form
77,985,625.23/107,623,526.10 = 43,178,316.15/x - Step 3: Cross multiply
77,985,625.23x = 107,623,526.10 × 43,178,316.15 - Step 4: Simplify right side
77,985,625.23x = 4,647,002,635,123,576 - Step 5: Solve for x
x = 4,647,002,635,123,576/77,985,625.23 - Step 6: Final answer
x = 59,587,938.44
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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.