Finding the Fourth Proportional to 128,726.87, 193,059.54 and 44,490.02
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Solution
The fourth proportional to 128,726.87, 193,059.54 and 44,490.02 is: 66,724.39
Step by Step Solution
- Step 1: Write the proportion equation
128,726.87 : 193,059.54 = 44,490.02 : x - Step 2: Convert to fraction form
128,726.87/193,059.54 = 44,490.02/x - Step 3: Cross multiply
128,726.87x = 193,059.54 × 44,490.02 - Step 4: Simplify right side
128,726.87x = 8,589,221,830.49 - Step 5: Solve for x
x = 8,589,221,830.49/128,726.87 - Step 6: Final answer
x = 66,724.39
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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.