Finding the Fourth Proportional to 74,374.98, 102,636.92 and 40,382.82
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Solution
The fourth proportional to 74,374.98, 102,636.92 and 40,382.82 is: 55,727.99
Step by Step Solution
- Step 1: Write the proportion equation
74,374.98 : 102,636.92 = 40,382.82 : x - Step 2: Convert to fraction form
74,374.98/102,636.92 = 40,382.82/x - Step 3: Cross multiply
74,374.98x = 102,636.92 × 40,382.82 - Step 4: Simplify right side
74,374.98x = 4,144,768,265.71 - Step 5: Solve for x
x = 4,144,768,265.71/74,374.98 - Step 6: Final answer
x = 55,727.99
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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.