Finding the Fourth Proportional to 75,130.61, 103,681.49 and 41,139.09
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Solution
The fourth proportional to 75,130.61, 103,681.49 and 41,139.09 is: 56,772.63
Step by Step Solution
- Step 1: Write the proportion equation
75,130.61 : 103,681.49 = 41,139.09 : x - Step 2: Convert to fraction form
75,130.61/103,681.49 = 41,139.09/x - Step 3: Cross multiply
75,130.61x = 103,681.49 × 41,139.09 - Step 4: Simplify right side
75,130.61x = 4,265,361,942.75 - Step 5: Solve for x
x = 4,265,361,942.75/75,130.61 - Step 6: Final answer
x = 56,772.63
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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.