Finding the Fourth Proportional to 98,644.84, 136,097.20 and 55,618.94
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Solution
The fourth proportional to 98,644.84, 136,097.20 and 55,618.94 is: 76,735.71
Step by Step Solution
- Step 1: Write the proportion equation
98,644.84 : 136,097.20 = 55,618.94 : x - Step 2: Convert to fraction form
98,644.84/136,097.20 = 55,618.94/x - Step 3: Cross multiply
98,644.84x = 136,097.20 × 55,618.94 - Step 4: Simplify right side
98,644.84x = 7,569,582,000.97 - Step 5: Solve for x
x = 7,569,582,000.97/98,644.84 - Step 6: Final answer
x = 76,735.71
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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.