Finding the Fourth Proportional to 98,636.06, 135,957.82 and 77,087.75
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Solution
The fourth proportional to 98,636.06, 135,957.82 and 77,087.75 is: 106,256.09
Step by Step Solution
- Step 1: Write the proportion equation
98,636.06 : 135,957.82 = 77,087.75 : x - Step 2: Convert to fraction form
98,636.06/135,957.82 = 77,087.75/x - Step 3: Cross multiply
98,636.06x = 135,957.82 × 77,087.75 - Step 4: Simplify right side
98,636.06x = 10,480,682,438.71 - Step 5: Solve for x
x = 10,480,682,438.71/98,636.06 - Step 6: Final answer
x = 106,256.09
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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.