Finding the Fourth Proportional to 75,128.80, 103,677.74 and 41,594.80
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Solution
The fourth proportional to 75,128.80, 103,677.74 and 41,594.80 is: 57,400.82
Step by Step Solution
- Step 1: Write the proportion equation
75,128.80 : 103,677.74 = 41,594.80 : x - Step 2: Convert to fraction form
75,128.80/103,677.74 = 41,594.80/x - Step 3: Cross multiply
75,128.80x = 103,677.74 × 41,594.80 - Step 4: Simplify right side
75,128.80x = 4,312,454,859.75 - Step 5: Solve for x
x = 4,312,454,859.75/75,128.80 - Step 6: Final answer
x = 57,400.82
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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.