Finding the Fourth Proportional to 74,497.77, 102,805.79 and 40,505.99
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Solution
The fourth proportional to 74,497.77, 102,805.79 and 40,505.99 is: 55,897.64
Step by Step Solution
- Step 1: Write the proportion equation
74,497.77 : 102,805.79 = 40,505.99 : x - Step 2: Convert to fraction form
74,497.77/102,805.79 = 40,505.99/x - Step 3: Cross multiply
74,497.77x = 102,805.79 × 40,505.99 - Step 4: Simplify right side
74,497.77x = 4,164,249,585.12 - Step 5: Solve for x
x = 4,164,249,585.12/74,497.77 - Step 6: Final answer
x = 55,897.64
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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.