Finding the Fourth Proportional to 77,029.63, 106,318.65 and 50,125.43
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Solution
The fourth proportional to 77,029.63, 106,318.65 and 50,125.43 is: 69,184.65
Step by Step Solution
- Step 1: Write the proportion equation
77,029.63 : 106,318.65 = 50,125.43 : x - Step 2: Convert to fraction form
77,029.63/106,318.65 = 50,125.43/x - Step 3: Cross multiply
77,029.63x = 106,318.65 × 50,125.43 - Step 4: Simplify right side
77,029.63x = 5,329,268,361.06 - Step 5: Solve for x
x = 5,329,268,361.06/77,029.63 - Step 6: Final answer
x = 69,184.65
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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.