Finding the Fourth Proportional to 88,423.75, 121,988.67 and 54,421.96
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Solution
The fourth proportional to 88,423.75, 121,988.67 and 54,421.96 is: 75,080.08
Step by Step Solution
- Step 1: Write the proportion equation
88,423.75 : 121,988.67 = 54,421.96 : x - Step 2: Convert to fraction form
88,423.75/121,988.67 = 54,421.96/x - Step 3: Cross multiply
88,423.75x = 121,988.67 × 54,421.96 - Step 4: Simplify right side
88,423.75x = 6,638,862,519.19 - Step 5: Solve for x
x = 6,638,862,519.19/88,423.75 - Step 6: Final answer
x = 75,080.08
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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.