Finding the Fourth Proportional to 74,386.62, 102,653.64 and 40,395.12
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Solution
The fourth proportional to 74,386.62, 102,653.64 and 40,395.12 is: 55,745.32
Step by Step Solution
- Step 1: Write the proportion equation
74,386.62 : 102,653.64 = 40,395.12 : x - Step 2: Convert to fraction form
74,386.62/102,653.64 = 40,395.12/x - Step 3: Cross multiply
74,386.62x = 102,653.64 × 40,395.12 - Step 4: Simplify right side
74,386.62x = 4,146,706,106.24 - Step 5: Solve for x
x = 4,146,706,106.24/74,386.62 - Step 6: Final answer
x = 55,745.32
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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.