Finding the Fourth Proportional to 77,245.80, 115,941.60 and 47,721.30
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Solution
The fourth proportional to 77,245.80, 115,941.60 and 47,721.30 is: 71,626.99
Step by Step Solution
- Step 1: Write the proportion equation
77,245.80 : 115,941.60 = 47,721.30 : x - Step 2: Convert to fraction form
77,245.80/115,941.60 = 47,721.30/x - Step 3: Cross multiply
77,245.80x = 115,941.60 × 47,721.30 - Step 4: Simplify right side
77,245.80x = 5,532,883,876.08 - Step 5: Solve for x
x = 5,532,883,876.08/77,245.80 - Step 6: Final answer
x = 71,626.99
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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.