Finding the Fourth Proportional to 76,847.58, 106,085.07 and 54,205.02
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Solution
The fourth proportional to 76,847.58, 106,085.07 and 54,205.02 is: 74,827.90
Step by Step Solution
- Step 1: Write the proportion equation
76,847.58 : 106,085.07 = 54,205.02 : x - Step 2: Convert to fraction form
76,847.58/106,085.07 = 54,205.02/x - Step 3: Cross multiply
76,847.58x = 106,085.07 × 54,205.02 - Step 4: Simplify right side
76,847.58x = 5,750,343,341.05 - Step 5: Solve for x
x = 5,750,343,341.05/76,847.58 - Step 6: Final answer
x = 74,827.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.