Finding the Fourth Proportional to 75,171.05, 103,686.21 and 48,347.49
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Solution
The fourth proportional to 75,171.05, 103,686.21 and 48,347.49 is: 66,687.48
Step by Step Solution
- Step 1: Write the proportion equation
75,171.05 : 103,686.21 = 48,347.49 : x - Step 2: Convert to fraction form
75,171.05/103,686.21 = 48,347.49/x - Step 3: Cross multiply
75,171.05x = 103,686.21 × 48,347.49 - Step 4: Simplify right side
75,171.05x = 5,012,968,001.11 - Step 5: Solve for x
x = 5,012,968,001.11/75,171.05 - Step 6: Final answer
x = 66,687.48
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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.