Finding the Fourth Proportional to 74,368.09, 102,627.40 and 40,375.91
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Solution
The fourth proportional to 74,368.09, 102,627.40 and 40,375.91 is: 55,718.45
Step by Step Solution
- Step 1: Write the proportion equation
74,368.09 : 102,627.40 = 40,375.91 : x - Step 2: Convert to fraction form
74,368.09/102,627.40 = 40,375.91/x - Step 3: Cross multiply
74,368.09x = 102,627.40 × 40,375.91 - Step 4: Simplify right side
74,368.09x = 4,143,674,665.93 - Step 5: Solve for x
x = 4,143,674,665.93/74,368.09 - Step 6: Final answer
x = 55,718.45
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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.