Finding the Fourth Proportional to 88,217.20, 121,737.63 and 47,930.05
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Solution
The fourth proportional to 88,217.20, 121,737.63 and 47,930.05 is: 66,142.32
Step by Step Solution
- Step 1: Write the proportion equation
88,217.20 : 121,737.63 = 47,930.05 : x - Step 2: Convert to fraction form
88,217.20/121,737.63 = 47,930.05/x - Step 3: Cross multiply
88,217.20x = 121,737.63 × 47,930.05 - Step 4: Simplify right side
88,217.20x = 5,834,890,692.78 - Step 5: Solve for x
x = 5,834,890,692.78/88,217.20 - Step 6: Final answer
x = 66,142.32
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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.