Finding the Fourth Proportional to 77,057.70, 106,338.97 and 43,067.62
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Solution
The fourth proportional to 77,057.70, 106,338.97 and 43,067.62 is: 59,432.95
Step by Step Solution
- Step 1: Write the proportion equation
77,057.70 : 106,338.97 = 43,067.62 : x - Step 2: Convert to fraction form
77,057.70/106,338.97 = 43,067.62/x - Step 3: Cross multiply
77,057.70x = 106,338.97 × 43,067.62 - Step 4: Simplify right side
77,057.70x = 4,579,766,351.15 - Step 5: Solve for x
x = 4,579,766,351.15/77,057.70 - Step 6: Final answer
x = 59,432.95
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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.