Finding the Fourth Proportional to 76,547.68, 114,884.64 and 39,135.36
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Solution
The fourth proportional to 76,547.68, 114,884.64 and 39,135.36 is: 58,735.31
Step by Step Solution
- Step 1: Write the proportion equation
76,547.68 : 114,884.64 = 39,135.36 : x - Step 2: Convert to fraction form
76,547.68/114,884.64 = 39,135.36/x - Step 3: Cross multiply
76,547.68x = 114,884.64 × 39,135.36 - Step 4: Simplify right side
76,547.68x = 4,496,051,744.87 - Step 5: Solve for x
x = 4,496,051,744.87/76,547.68 - Step 6: Final answer
x = 58,735.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.