Finding the Fourth Proportional to 107,048.80, 147,743.08 and 61,717.92
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Solution
The fourth proportional to 107,048.80, 147,743.08 and 61,717.92 is: 85,179.80
Step by Step Solution
- Step 1: Write the proportion equation
107,048.80 : 147,743.08 = 61,717.92 : x - Step 2: Convert to fraction form
107,048.80/147,743.08 = 61,717.92/x - Step 3: Cross multiply
107,048.80x = 147,743.08 × 61,717.92 - Step 4: Simplify right side
107,048.80x = 9,118,395,591.99 - Step 5: Solve for x
x = 9,118,395,591.99/107,048.80 - Step 6: Final answer
x = 85,179.80
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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.