Finding the Fourth Proportional to 74,421.75, 102,702.84 and 40,887.75
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Solution
The fourth proportional to 74,421.75, 102,702.84 and 40,887.75 is: 56,425.55
Step by Step Solution
- Step 1: Write the proportion equation
74,421.75 : 102,702.84 = 40,887.75 : x - Step 2: Convert to fraction form
74,421.75/102,702.84 = 40,887.75/x - Step 3: Cross multiply
74,421.75x = 102,702.84 × 40,887.75 - Step 4: Simplify right side
74,421.75x = 4,199,288,046.21 - Step 5: Solve for x
x = 4,199,288,046.21/74,421.75 - Step 6: Final answer
x = 56,425.55
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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.