Finding the Fourth Proportional to 74,531.70, 102,856.05 and 40,542.66
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Solution
The fourth proportional to 74,531.70, 102,856.05 and 40,542.66 is: 55,950.12
Step by Step Solution
- Step 1: Write the proportion equation
74,531.70 : 102,856.05 = 40,542.66 : x - Step 2: Convert to fraction form
74,531.70/102,856.05 = 40,542.66/x - Step 3: Cross multiply
74,531.70x = 102,856.05 × 40,542.66 - Step 4: Simplify right side
74,531.70x = 4,170,057,864.09 - Step 5: Solve for x
x = 4,170,057,864.09/74,531.70 - Step 6: Final answer
x = 55,950.12
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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.