Finding the Fourth Proportional to 74,678.90, 112,014.68 and 27,928.13
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Solution
The fourth proportional to 74,678.90, 112,014.68 and 27,928.13 is: 41,890.82
Step by Step Solution
- Step 1: Write the proportion equation
74,678.90 : 112,014.68 = 27,928.13 : x - Step 2: Convert to fraction form
74,678.90/112,014.68 = 27,928.13/x - Step 3: Cross multiply
74,678.90x = 112,014.68 × 27,928.13 - Step 4: Simplify right side
74,678.90x = 3,128,359,845.23 - Step 5: Solve for x
x = 3,128,359,845.23/74,678.90 - Step 6: Final answer
x = 41,890.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.