Finding the Fourth Proportional to 74,691.76, 103,074.30 and 40,700.12
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Solution
The fourth proportional to 74,691.76, 103,074.30 and 40,700.12 is: 56,165.99
Step by Step Solution
- Step 1: Write the proportion equation
74,691.76 : 103,074.30 = 40,700.12 : x - Step 2: Convert to fraction form
74,691.76/103,074.30 = 40,700.12/x - Step 3: Cross multiply
74,691.76x = 103,074.30 × 40,700.12 - Step 4: Simplify right side
74,691.76x = 4,195,136,378.92 - Step 5: Solve for x
x = 4,195,136,378.92/74,691.76 - Step 6: Final answer
x = 56,165.99
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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.