Finding the Fourth Proportional to 74,391.08, 102,658.74 and 40,854.92
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Solution
The fourth proportional to 74,391.08, 102,658.74 and 40,854.92 is: 56,379.27
Step by Step Solution
- Step 1: Write the proportion equation
74,391.08 : 102,658.74 = 40,854.92 : x - Step 2: Convert to fraction form
74,391.08/102,658.74 = 40,854.92/x - Step 3: Cross multiply
74,391.08x = 102,658.74 × 40,854.92 - Step 4: Simplify right side
74,391.08x = 4,194,114,610.00 - Step 5: Solve for x
x = 4,194,114,610.00/74,391.08 - Step 6: Final answer
x = 56,379.27
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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.