Finding the Fourth Proportional to 74,971.03, 103,459.94 and 40,979.74
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Solution
The fourth proportional to 74,971.03, 103,459.94 and 40,979.74 is: 56,551.99
Step by Step Solution
- Step 1: Write the proportion equation
74,971.03 : 103,459.94 = 40,979.74 : x - Step 2: Convert to fraction form
74,971.03/103,459.94 = 40,979.74/x - Step 3: Cross multiply
74,971.03x = 103,459.94 × 40,979.74 - Step 4: Simplify right side
74,971.03x = 4,239,761,236.72 - Step 5: Solve for x
x = 4,239,761,236.72/74,971.03 - Step 6: Final answer
x = 56,551.99
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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.