Finding the Fourth Proportional to 75,905.55, 113,927.18 and 38,491.65
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Solution
The fourth proportional to 75,905.55, 113,927.18 and 38,491.65 is: 57,772.39
Step by Step Solution
- Step 1: Write the proportion equation
75,905.55 : 113,927.18 = 38,491.65 : x - Step 2: Convert to fraction form
75,905.55/113,927.18 = 38,491.65/x - Step 3: Cross multiply
75,905.55x = 113,927.18 × 38,491.65 - Step 4: Simplify right side
75,905.55x = 4,385,244,945.59 - Step 5: Solve for x
x = 4,385,244,945.59/75,905.55 - Step 6: Final answer
x = 57,772.39
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1.5x scale
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.