Finding the Fourth Proportional to 74,151.91, 102,329.12 and 40,159.62
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Solution
The fourth proportional to 74,151.91, 102,329.12 and 40,159.62 is: 55,419.99
Step by Step Solution
- Step 1: Write the proportion equation
74,151.91 : 102,329.12 = 40,159.62 : x - Step 2: Convert to fraction form
74,151.91/102,329.12 = 40,159.62/x - Step 3: Cross multiply
74,151.91x = 102,329.12 × 40,159.62 - Step 4: Simplify right side
74,151.91x = 4,109,498,386.73 - Step 5: Solve for x
x = 4,109,498,386.73/74,151.91 - Step 6: Final answer
x = 55,419.99
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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.