Finding the Fourth Proportional to 91,115.84, 125,718.44 and 55,304.96
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Solution
The fourth proportional to 91,115.84, 125,718.44 and 55,304.96 is: 76,307.84
Step by Step Solution
- Step 1: Write the proportion equation
91,115.84 : 125,718.44 = 55,304.96 : x - Step 2: Convert to fraction form
91,115.84/125,718.44 = 55,304.96/x - Step 3: Cross multiply
91,115.84x = 125,718.44 × 55,304.96 - Step 4: Simplify right side
91,115.84x = 6,952,853,295.46 - Step 5: Solve for x
x = 6,952,853,295.46/91,115.84 - Step 6: Final answer
x = 76,307.84
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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.