Finding the Fourth Proportional to 74,506.88, 102,821.76 and 40,974.08
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Solution
The fourth proportional to 74,506.88, 102,821.76 and 40,974.08 is: 56,545.48
Step by Step Solution
- Step 1: Write the proportion equation
74,506.88 : 102,821.76 = 40,974.08 : x - Step 2: Convert to fraction form
74,506.88/102,821.76 = 40,974.08/x - Step 3: Cross multiply
74,506.88x = 102,821.76 × 40,974.08 - Step 4: Simplify right side
74,506.88x = 4,213,027,019.98 - Step 5: Solve for x
x = 4,213,027,019.98/74,506.88 - Step 6: Final answer
x = 56,545.48
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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.