Finding the Fourth Proportional to 75,128.94, 103,671.77 and 43,299.99
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Solution
The fourth proportional to 75,128.94, 103,671.77 and 43,299.99 is: 59,750.43
Step by Step Solution
- Step 1: Write the proportion equation
75,128.94 : 103,671.77 = 43,299.99 : x - Step 2: Convert to fraction form
75,128.94/103,671.77 = 43,299.99/x - Step 3: Cross multiply
75,128.94x = 103,671.77 × 43,299.99 - Step 4: Simplify right side
75,128.94x = 4,488,986,387.78 - Step 5: Solve for x
x = 4,488,986,387.78/75,128.94 - Step 6: Final answer
x = 59,750.43
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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.