Finding the Fourth Proportional to 76,716.40, 115,117.80 and 29,963.20
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Solution
The fourth proportional to 76,716.40, 115,117.80 and 29,963.20 is: 44,961.67
Step by Step Solution
- Step 1: Write the proportion equation
76,716.40 : 115,117.80 = 29,963.20 : x - Step 2: Convert to fraction form
76,716.40/115,117.80 = 29,963.20/x - Step 3: Cross multiply
76,716.40x = 115,117.80 × 29,963.20 - Step 4: Simplify right side
76,716.40x = 3,449,297,664.96 - Step 5: Solve for x
x = 3,449,297,664.96/76,716.40 - Step 6: Final answer
x = 44,961.67
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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.