Finding the Fourth Proportional to 75,109.92, 103,541.26 and 57,173.68
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Solution
The fourth proportional to 75,109.92, 103,541.26 and 57,173.68 is: 78,815.62
Step by Step Solution
- Step 1: Write the proportion equation
75,109.92 : 103,541.26 = 57,173.68 : x - Step 2: Convert to fraction form
75,109.92/103,541.26 = 57,173.68/x - Step 3: Cross multiply
75,109.92x = 103,541.26 × 57,173.68 - Step 4: Simplify right side
75,109.92x = 5,919,834,866.04 - Step 5: Solve for x
x = 5,919,834,866.04/75,109.92 - Step 6: Final answer
x = 78,815.62
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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.