Finding the Fourth Proportional to 91,216.70, 125,895.42 and 54,425.28
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Solution
The fourth proportional to 91,216.70, 125,895.42 and 54,425.28 is: 75,116.66
Step by Step Solution
- Step 1: Write the proportion equation
91,216.70 : 125,895.42 = 54,425.28 : x - Step 2: Convert to fraction form
91,216.70/125,895.42 = 54,425.28/x - Step 3: Cross multiply
91,216.70x = 125,895.42 × 54,425.28 - Step 4: Simplify right side
91,216.70x = 6,851,893,484.22 - Step 5: Solve for x
x = 6,851,893,484.22/91,216.70 - Step 6: Final answer
x = 75,116.66
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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.