Finding the Fourth Proportional to 99,112.88, 136,776.47 and 53,791.63
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Solution
The fourth proportional to 99,112.88, 136,776.47 and 53,791.63 is: 74,232.82
Step by Step Solution
- Step 1: Write the proportion equation
99,112.88 : 136,776.47 = 53,791.63 : x - Step 2: Convert to fraction form
99,112.88/136,776.47 = 53,791.63/x - Step 3: Cross multiply
99,112.88x = 136,776.47 × 53,791.63 - Step 4: Simplify right side
99,112.88x = 7,357,428,656.05 - Step 5: Solve for x
x = 7,357,428,656.05/99,112.88 - Step 6: Final answer
x = 74,232.82
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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.