Finding the Fourth Proportional to 86,138.33, 118,871.43 and 49,838.99
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Solution
The fourth proportional to 86,138.33, 118,871.43 and 49,838.99 is: 68,778.12
Step by Step Solution
- Step 1: Write the proportion equation
86,138.33 : 118,871.43 = 49,838.99 : x - Step 2: Convert to fraction form
86,138.33/118,871.43 = 49,838.99/x - Step 3: Cross multiply
86,138.33x = 118,871.43 × 49,838.99 - Step 4: Simplify right side
86,138.33x = 5,924,432,011.06 - Step 5: Solve for x
x = 5,924,432,011.06/86,138.33 - Step 6: Final answer
x = 68,778.12
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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.