Finding the Fourth Proportional to 74,785.20, 112,026.60 and 46,618.80
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Solution
The fourth proportional to 74,785.20, 112,026.60 and 46,618.80 is: 69,833.95
Step by Step Solution
- Step 1: Write the proportion equation
74,785.20 : 112,026.60 = 46,618.80 : x - Step 2: Convert to fraction form
74,785.20/112,026.60 = 46,618.80/x - Step 3: Cross multiply
74,785.20x = 112,026.60 × 46,618.80 - Step 4: Simplify right side
74,785.20x = 5,222,545,660.08 - Step 5: Solve for x
x = 5,222,545,660.08/74,785.20 - Step 6: Final answer
x = 69,833.95
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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.