Finding the Fourth Proportional to 112,614.48, 155,405.55 and 61,626.99
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Solution
The fourth proportional to 112,614.48, 155,405.55 and 61,626.99 is: 85,043.92
Step by Step Solution
- Step 1: Write the proportion equation
112,614.48 : 155,405.55 = 61,626.99 : x - Step 2: Convert to fraction form
112,614.48/155,405.55 = 61,626.99/x - Step 3: Cross multiply
112,614.48x = 155,405.55 × 61,626.99 - Step 4: Simplify right side
112,614.48x = 9,577,176,275.79 - Step 5: Solve for x
x = 9,577,176,275.79/112,614.48 - Step 6: Final answer
x = 85,043.92
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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.