Finding the Fourth Proportional to 76,830.76, 115,244.98 and 46,853.80
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Solution
The fourth proportional to 76,830.76, 115,244.98 and 46,853.80 is: 70,279.99
Step by Step Solution
- Step 1: Write the proportion equation
76,830.76 : 115,244.98 = 46,853.80 : x - Step 2: Convert to fraction form
76,830.76/115,244.98 = 46,853.80/x - Step 3: Cross multiply
76,830.76x = 115,244.98 × 46,853.80 - Step 4: Simplify right side
76,830.76x = 5,399,665,243.92 - Step 5: Solve for x
x = 5,399,665,243.92/76,830.76 - Step 6: Final answer
x = 70,279.99
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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.