Finding the Fourth Proportional to 74,389.21, 102,656.79 and 40,397.46
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Solution
The fourth proportional to 74,389.21, 102,656.79 and 40,397.46 is: 55,748.32
Step by Step Solution
- Step 1: Write the proportion equation
74,389.21 : 102,656.79 = 40,397.46 : x - Step 2: Convert to fraction form
74,389.21/102,656.79 = 40,397.46/x - Step 3: Cross multiply
74,389.21x = 102,656.79 × 40,397.46 - Step 4: Simplify right side
74,389.21x = 4,147,073,585.13 - Step 5: Solve for x
x = 4,147,073,585.13/74,389.21 - Step 6: Final answer
x = 55,748.32
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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.