Finding the Fourth Proportional to 88,272.12, 121,817.90 and 47,988.62
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Solution
The fourth proportional to 88,272.12, 121,817.90 and 47,988.62 is: 66,225.58
Step by Step Solution
- Step 1: Write the proportion equation
88,272.12 : 121,817.90 = 47,988.62 : x - Step 2: Convert to fraction form
88,272.12/121,817.90 = 47,988.62/x - Step 3: Cross multiply
88,272.12x = 121,817.90 × 47,988.62 - Step 4: Simplify right side
88,272.12x = 5,845,872,423.18 - Step 5: Solve for x
x = 5,845,872,423.18/88,272.12 - Step 6: Final answer
x = 66,225.58
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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.