Finding the Fourth Proportional to 75,418.76, 113,128.09 and 19,258.88
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Solution
The fourth proportional to 75,418.76, 113,128.09 and 19,258.88 is: 28,888.31
Step by Step Solution
- Step 1: Write the proportion equation
75,418.76 : 113,128.09 = 19,258.88 : x - Step 2: Convert to fraction form
75,418.76/113,128.09 = 19,258.88/x - Step 3: Cross multiply
75,418.76x = 113,128.09 × 19,258.88 - Step 4: Simplify right side
75,418.76x = 2,178,720,309.94 - Step 5: Solve for x
x = 2,178,720,309.94/75,418.76 - Step 6: Final answer
x = 28,888.31
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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.