Finding the Fourth Proportional to 75,130.11, 103,679.72 and 40,675.21
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Solution
The fourth proportional to 75,130.11, 103,679.72 and 40,675.21 is: 56,131.88
Step by Step Solution
- Step 1: Write the proportion equation
75,130.11 : 103,679.72 = 40,675.21 : x - Step 2: Convert to fraction form
75,130.11/103,679.72 = 40,675.21/x - Step 3: Cross multiply
75,130.11x = 103,679.72 × 40,675.21 - Step 4: Simplify right side
75,130.11x = 4,217,194,226.23 - Step 5: Solve for x
x = 4,217,194,226.23/75,130.11 - Step 6: Final answer
x = 56,131.88
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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.