Finding the Fourth Proportional to 78,430.68, 117,549.64 and 36,253.70
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Solution
The fourth proportional to 78,430.68, 117,549.64 and 36,253.70 is: 54,336.00
Step by Step Solution
- Step 1: Write the proportion equation
78,430.68 : 117,549.64 = 36,253.70 : x - Step 2: Convert to fraction form
78,430.68/117,549.64 = 36,253.70/x - Step 3: Cross multiply
78,430.68x = 117,549.64 × 36,253.70 - Step 4: Simplify right side
78,430.68x = 4,261,609,282.05 - Step 5: Solve for x
x = 4,261,609,282.05/78,430.68 - Step 6: Final answer
x = 54,336.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.