Finding the Fourth Proportional to 87,854.64, 121,239.84 and 47,568.48
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Solution
The fourth proportional to 87,854.64, 121,239.84 and 47,568.48 is: 65,644.74
Step by Step Solution
- Step 1: Write the proportion equation
87,854.64 : 121,239.84 = 47,568.48 : x - Step 2: Convert to fraction form
87,854.64/121,239.84 = 47,568.48/x - Step 3: Cross multiply
87,854.64x = 121,239.84 × 47,568.48 - Step 4: Simplify right side
87,854.64x = 5,767,194,904.24 - Step 5: Solve for x
x = 5,767,194,904.24/87,854.64 - Step 6: Final answer
x = 65,644.74
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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.