Finding the Fourth Proportional to 88,028.58, 121,479.09 and 47,742.18
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Solution
The fourth proportional to 88,028.58, 121,479.09 and 47,742.18 is: 65,884.02
Step by Step Solution
- Step 1: Write the proportion equation
88,028.58 : 121,479.09 = 47,742.18 : x - Step 2: Convert to fraction form
88,028.58/121,479.09 = 47,742.18/x - Step 3: Cross multiply
88,028.58x = 121,479.09 × 47,742.18 - Step 4: Simplify right side
88,028.58x = 5,799,676,581.02 - Step 5: Solve for x
x = 5,799,676,581.02/88,028.58 - Step 6: Final answer
x = 65,884.02
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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.