Finding the Fourth Proportional to 74,190.16, 102,379.08 and 40,655.44
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Solution
The fourth proportional to 74,190.16, 102,379.08 and 40,655.44 is: 56,102.68
Step by Step Solution
- Step 1: Write the proportion equation
74,190.16 : 102,379.08 = 40,655.44 : x - Step 2: Convert to fraction form
74,190.16/102,379.08 = 40,655.44/x - Step 3: Cross multiply
74,190.16x = 102,379.08 × 40,655.44 - Step 4: Simplify right side
74,190.16x = 4,162,266,544.20 - Step 5: Solve for x
x = 4,162,266,544.20/74,190.16 - Step 6: Final answer
x = 56,102.68
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1.5x scale
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.