Finding the Fourth Proportional to 74,407.16, 102,682.64 and 40,415.98
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Solution
The fourth proportional to 74,407.16, 102,682.64 and 40,415.98 is: 55,774.46
Step by Step Solution
- Step 1: Write the proportion equation
74,407.16 : 102,682.64 = 40,415.98 : x - Step 2: Convert to fraction form
74,407.16/102,682.64 = 40,415.98/x - Step 3: Cross multiply
74,407.16x = 102,682.64 × 40,415.98 - Step 4: Simplify right side
74,407.16x = 4,150,019,524.59 - Step 5: Solve for x
x = 4,150,019,524.59/74,407.16 - Step 6: Final answer
x = 55,774.46
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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.