Finding the Fourth Proportional to 75,324.96, 103,947.36 and 40,869.18
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Solution
The fourth proportional to 75,324.96, 103,947.36 and 40,869.18 is: 56,398.88
Step by Step Solution
- Step 1: Write the proportion equation
75,324.96 : 103,947.36 = 40,869.18 : x - Step 2: Convert to fraction form
75,324.96/103,947.36 = 40,869.18/x - Step 3: Cross multiply
75,324.96x = 103,947.36 × 40,869.18 - Step 4: Simplify right side
75,324.96x = 4,248,243,366.36 - Step 5: Solve for x
x = 4,248,243,366.36/75,324.96 - Step 6: Final answer
x = 56,398.88
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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.