Finding the Fourth Proportional to 112,520.40, 155,275.08 and 62,217.68
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Solution
The fourth proportional to 112,520.40, 155,275.08 and 62,217.68 is: 85,858.70
Step by Step Solution
- Step 1: Write the proportion equation
112,520.40 : 155,275.08 = 62,217.68 : x - Step 2: Convert to fraction form
112,520.40/155,275.08 = 62,217.68/x - Step 3: Cross multiply
112,520.40x = 155,275.08 × 62,217.68 - Step 4: Simplify right side
112,520.40x = 9,660,855,239.41 - Step 5: Solve for x
x = 9,660,855,239.41/112,520.40 - Step 6: Final answer
x = 85,858.70
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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.