Finding the Fourth Proportional to 74,438.40, 102,726.12 and 40,447.44
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Solution
The fourth proportional to 74,438.40, 102,726.12 and 40,447.44 is: 55,818.08
Step by Step Solution
- Step 1: Write the proportion equation
74,438.40 : 102,726.12 = 40,447.44 : x - Step 2: Convert to fraction form
74,438.40/102,726.12 = 40,447.44/x - Step 3: Cross multiply
74,438.40x = 102,726.12 × 40,447.44 - Step 4: Simplify right side
74,438.40x = 4,155,008,575.13 - Step 5: Solve for x
x = 4,155,008,575.13/74,438.40 - Step 6: Final answer
x = 55,818.08
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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.