Finding the Fourth Proportional to 78,125.10, 117,194.58 and 21,965.70
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Solution
The fourth proportional to 78,125.10, 117,194.58 and 21,965.70 is: 32,950.50
Step by Step Solution
- Step 1: Write the proportion equation
78,125.10 : 117,194.58 = 21,965.70 : x - Step 2: Convert to fraction form
78,125.10/117,194.58 = 21,965.70/x - Step 3: Cross multiply
78,125.10x = 117,194.58 × 21,965.70 - Step 4: Simplify right side
78,125.10x = 2,574,261,343.01 - Step 5: Solve for x
x = 2,574,261,343.01/78,125.10 - Step 6: Final answer
x = 32,950.50
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1.5x scale
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.