Finding the Fourth Proportional to 87,985.64, 121,391.62 and 49,741.48
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Solution
The fourth proportional to 87,985.64, 121,391.62 and 49,741.48 is: 68,627.09
Step by Step Solution
- Step 1: Write the proportion equation
87,985.64 : 121,391.62 = 49,741.48 : x - Step 2: Convert to fraction form
87,985.64/121,391.62 = 49,741.48/x - Step 3: Cross multiply
87,985.64x = 121,391.62 × 49,741.48 - Step 4: Simplify right side
87,985.64x = 6,038,198,838.40 - Step 5: Solve for x
x = 6,038,198,838.40/87,985.64 - Step 6: Final answer
x = 68,627.09
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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.