Finding the Fourth Proportional to 75,137.28, 103,700.84 and 42,871.74
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Solution
The fourth proportional to 75,137.28, 103,700.84 and 42,871.74 is: 59,169.50
Step by Step Solution
- Step 1: Write the proportion equation
75,137.28 : 103,700.84 = 42,871.74 : x - Step 2: Convert to fraction form
75,137.28/103,700.84 = 42,871.74/x - Step 3: Cross multiply
75,137.28x = 103,700.84 × 42,871.74 - Step 4: Simplify right side
75,137.28x = 4,445,835,450.26 - Step 5: Solve for x
x = 4,445,835,450.26/75,137.28 - Step 6: Final answer
x = 59,169.50
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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.