Finding the Fourth Proportional to 74,883.99, 103,340.43 and 40,891.62
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Solution
The fourth proportional to 74,883.99, 103,340.43 and 40,891.62 is: 56,430.72
Step by Step Solution
- Step 1: Write the proportion equation
74,883.99 : 103,340.43 = 40,891.62 : x - Step 2: Convert to fraction form
74,883.99/103,340.43 = 40,891.62/x - Step 3: Cross multiply
74,883.99x = 103,340.43 × 40,891.62 - Step 4: Simplify right side
74,883.99x = 4,225,757,594.20 - Step 5: Solve for x
x = 4,225,757,594.20/74,883.99 - Step 6: Final answer
x = 56,430.72
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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.