Finding the Fourth Proportional to 74,646.36, 102,918.60 and 47,744.64
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Solution
The fourth proportional to 74,646.36, 102,918.60 and 47,744.64 is: 65,827.88
Step by Step Solution
- Step 1: Write the proportion equation
74,646.36 : 102,918.60 = 47,744.64 : x - Step 2: Convert to fraction form
74,646.36/102,918.60 = 47,744.64/x - Step 3: Cross multiply
74,646.36x = 102,918.60 × 47,744.64 - Step 4: Simplify right side
74,646.36x = 4,913,811,506.30 - Step 5: Solve for x
x = 4,913,811,506.30/74,646.36 - Step 6: Final answer
x = 65,827.88
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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.