Finding the Fourth Proportional to 75,037.20, 112,555.80 and 57,541.20
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Solution
The fourth proportional to 75,037.20, 112,555.80 and 57,541.20 is: 86,311.80
Step by Step Solution
- Step 1: Write the proportion equation
75,037.20 : 112,555.80 = 57,541.20 : x - Step 2: Convert to fraction form
75,037.20/112,555.80 = 57,541.20/x - Step 3: Cross multiply
75,037.20x = 112,555.80 × 57,541.20 - Step 4: Simplify right side
75,037.20x = 6,476,595,798.96 - Step 5: Solve for x
x = 6,476,595,798.96/75,037.20 - Step 6: Final answer
x = 86,311.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.