Finding the Fourth Proportional to 87,699.60, 121,037.28 and 49,466.97
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Solution
The fourth proportional to 87,699.60, 121,037.28 and 49,466.97 is: 68,271.09
Step by Step Solution
- Step 1: Write the proportion equation
87,699.60 : 121,037.28 = 49,466.97 : x - Step 2: Convert to fraction form
87,699.60/121,037.28 = 49,466.97/x - Step 3: Cross multiply
87,699.60x = 121,037.28 × 49,466.97 - Step 4: Simplify right side
87,699.60x = 5,987,347,498.64 - Step 5: Solve for x
x = 5,987,347,498.64/87,699.60 - Step 6: Final answer
x = 68,271.09
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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.