Finding the Fourth Proportional to 112,640.75, 155,449.11 and 62,339.75
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Solution
The fourth proportional to 112,640.75, 155,449.11 and 62,339.75 is: 86,031.55
Step by Step Solution
- Step 1: Write the proportion equation
112,640.75 : 155,449.11 = 62,339.75 : x - Step 2: Convert to fraction form
112,640.75/155,449.11 = 62,339.75/x - Step 3: Cross multiply
112,640.75x = 155,449.11 × 62,339.75 - Step 4: Simplify right side
112,640.75x = 9,690,658,655.12 - Step 5: Solve for x
x = 9,690,658,655.12/112,640.75 - Step 6: Final answer
x = 86,031.55
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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.