Finding the Fourth Proportional to 91,290.77, 136,731.95 and 52,775.09
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Solution
The fourth proportional to 91,290.77, 136,731.95 and 52,775.09 is: 79,044.58
Step by Step Solution
- Step 1: Write the proportion equation
91,290.77 : 136,731.95 = 52,775.09 : x - Step 2: Convert to fraction form
91,290.77/136,731.95 = 52,775.09/x - Step 3: Cross multiply
91,290.77x = 136,731.95 × 52,775.09 - Step 4: Simplify right side
91,290.77x = 7,216,040,967.13 - Step 5: Solve for x
x = 7,216,040,967.13/91,290.77 - Step 6: Final answer
x = 79,044.58
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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.