Finding the Fourth Proportional to 74,684.29, 103,066.84 and 40,693.70
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Solution
The fourth proportional to 74,684.29, 103,066.84 and 40,693.70 is: 56,158.68
Step by Step Solution
- Step 1: Write the proportion equation
74,684.29 : 103,066.84 = 40,693.70 : x - Step 2: Convert to fraction form
74,684.29/103,066.84 = 40,693.70/x - Step 3: Cross multiply
74,684.29x = 103,066.84 × 40,693.70 - Step 4: Simplify right side
74,684.29x = 4,194,171,066.91 - Step 5: Solve for x
x = 4,194,171,066.91/74,684.29 - Step 6: Final answer
x = 56,158.68
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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.