Finding the Fourth Proportional to 74,065.96, 102,213.30 and 40,532.68
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Solution
The fourth proportional to 74,065.96, 102,213.30 and 40,532.68 is: 55,936.34
Step by Step Solution
- Step 1: Write the proportion equation
74,065.96 : 102,213.30 = 40,532.68 : x - Step 2: Convert to fraction form
74,065.96/102,213.30 = 40,532.68/x - Step 3: Cross multiply
74,065.96x = 102,213.30 × 40,532.68 - Step 4: Simplify right side
74,065.96x = 4,142,978,980.64 - Step 5: Solve for x
x = 4,142,978,980.64/74,065.96 - Step 6: Final answer
x = 55,936.34
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Double scale
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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.