Finding the Fourth Proportional to 98,889.76, 136,365.60 and 68,709.28
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Solution
The fourth proportional to 98,889.76, 136,365.60 and 68,709.28 is: 94,747.75
Step by Step Solution
- Step 1: Write the proportion equation
98,889.76 : 136,365.60 = 68,709.28 : x - Step 2: Convert to fraction form
98,889.76/136,365.60 = 68,709.28/x - Step 3: Cross multiply
98,889.76x = 136,365.60 × 68,709.28 - Step 4: Simplify right side
98,889.76x = 9,369,582,192.77 - Step 5: Solve for x
x = 9,369,582,192.77/98,889.76 - Step 6: Final answer
x = 94,747.75
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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.