Finding the Fourth Proportional to 74,682.68, 103,060.79 and 40,691.44
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Solution
The fourth proportional to 74,682.68, 103,060.79 and 40,691.44 is: 56,153.48
Step by Step Solution
- Step 1: Write the proportion equation
74,682.68 : 103,060.79 = 40,691.44 : x - Step 2: Convert to fraction form
74,682.68/103,060.79 = 40,691.44/x - Step 3: Cross multiply
74,682.68x = 103,060.79 × 40,691.44 - Step 4: Simplify right side
74,682.68x = 4,193,692,302.87 - Step 5: Solve for x
x = 4,193,692,302.87/74,682.68 - Step 6: Final answer
x = 56,153.48
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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.