Finding the Fourth Proportional to 74,421.75, 102,708.50 and 40,894.23
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Solution
The fourth proportional to 74,421.75, 102,708.50 and 40,894.23 is: 56,437.60
Step by Step Solution
- Step 1: Write the proportion equation
74,421.75 : 102,708.50 = 40,894.23 : x - Step 2: Convert to fraction form
74,421.75/102,708.50 = 40,894.23/x - Step 3: Cross multiply
74,421.75x = 102,708.50 × 40,894.23 - Step 4: Simplify right side
74,421.75x = 4,200,184,817.48 - Step 5: Solve for x
x = 4,200,184,817.48/74,421.75 - Step 6: Final answer
x = 56,437.60
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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.