Finding the Fourth Proportional to 74,122.80, 102,219.40 and 48,651.23
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Solution
The fourth proportional to 74,122.80, 102,219.40 and 48,651.23 is: 67,092.72
Step by Step Solution
- Step 1: Write the proportion equation
74,122.80 : 102,219.40 = 48,651.23 : x - Step 2: Convert to fraction form
74,122.80/102,219.40 = 48,651.23/x - Step 3: Cross multiply
74,122.80x = 102,219.40 × 48,651.23 - Step 4: Simplify right side
74,122.80x = 4,973,099,856.22 - Step 5: Solve for x
x = 4,973,099,856.22/74,122.80 - Step 6: Final answer
x = 67,092.72
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1.5x scale
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.