Finding the Fourth Proportional to 89,950.74, 124,142.50 and 74,816.70
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Solution
The fourth proportional to 89,950.74, 124,142.50 and 74,816.70 is: 103,255.76
Step by Step Solution
- Step 1: Write the proportion equation
89,950.74 : 124,142.50 = 74,816.70 : x - Step 2: Convert to fraction form
89,950.74/124,142.50 = 74,816.70/x - Step 3: Cross multiply
89,950.74x = 124,142.50 × 74,816.70 - Step 4: Simplify right side
89,950.74x = 9,287,932,179.75 - Step 5: Solve for x
x = 9,287,932,179.75/89,950.74 - Step 6: Final answer
x = 103,255.76
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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.