Finding the Fourth Proportional to 83,128.84, 114,717.93 and 47,318.85
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Solution
The fourth proportional to 83,128.84, 114,717.93 and 47,318.85 is: 65,300.09
Step by Step Solution
- Step 1: Write the proportion equation
83,128.84 : 114,717.93 = 47,318.85 : x - Step 2: Convert to fraction form
83,128.84/114,717.93 = 47,318.85/x - Step 3: Cross multiply
83,128.84x = 114,717.93 × 47,318.85 - Step 4: Simplify right side
83,128.84x = 5,428,320,521.98 - Step 5: Solve for x
x = 5,428,320,521.98/83,128.84 - Step 6: Final answer
x = 65,300.09
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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.