Finding the Fourth Proportional to 74,523.15, 102,840.93 and 40,530.90
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Solution
The fourth proportional to 74,523.15, 102,840.93 and 40,530.90 is: 55,932.09
Step by Step Solution
- Step 1: Write the proportion equation
74,523.15 : 102,840.93 = 40,530.90 : x - Step 2: Convert to fraction form
74,523.15/102,840.93 = 40,530.90/x - Step 3: Cross multiply
74,523.15x = 102,840.93 × 40,530.90 - Step 4: Simplify right side
74,523.15x = 4,168,235,449.74 - Step 5: Solve for x
x = 4,168,235,449.74/74,523.15 - Step 6: Final answer
x = 55,932.09
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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.