Finding the Fourth Proportional to 86,535.84, 129,039.92 and 83,452.14
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Solution
The fourth proportional to 86,535.84, 129,039.92 and 83,452.14 is: 124,441.59
Step by Step Solution
- Step 1: Write the proportion equation
86,535.84 : 129,039.92 = 83,452.14 : x - Step 2: Convert to fraction form
86,535.84/129,039.92 = 83,452.14/x - Step 3: Cross multiply
86,535.84x = 129,039.92 × 83,452.14 - Step 4: Simplify right side
86,535.84x = 10,768,657,469.43 - Step 5: Solve for x
x = 10,768,657,469.43/86,535.84 - Step 6: Final answer
x = 124,441.59
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.