Finding the Fourth Proportional to 77,579,523.55, 107,161,936.86 and 57,503,220.63
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Solution
The fourth proportional to 77,579,523.55, 107,161,936.86 and 57,503,220.63 is: 79,430,192.62
Step by Step Solution
- Step 1: Write the proportion equation
77,579,523.55 : 107,161,936.86 = 57,503,220.63 : x - Step 2: Convert to fraction form
77,579,523.55/107,161,936.86 = 57,503,220.63/x - Step 3: Cross multiply
77,579,523.55x = 107,161,936.86 × 57,503,220.63 - Step 4: Simplify right side
77,579,523.55x = 6,162,156,498,707,170 - Step 5: Solve for x
x = 6,162,156,498,707,170/77,579,523.55 - Step 6: Final answer
x = 79,430,192.62
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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.