Finding the Fourth Proportional to 98,917.34, 136,512.63 and 55,881.91
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Solution
The fourth proportional to 98,917.34, 136,512.63 and 55,881.91 is: 77,120.82
Step by Step Solution
- Step 1: Write the proportion equation
98,917.34 : 136,512.63 = 55,881.91 : x - Step 2: Convert to fraction form
98,917.34/136,512.63 = 55,881.91/x - Step 3: Cross multiply
98,917.34x = 136,512.63 × 55,881.91 - Step 4: Simplify right side
98,917.34x = 7,628,586,162.24 - Step 5: Solve for x
x = 7,628,586,162.24/98,917.34 - Step 6: Final answer
x = 77,120.82
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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.