Finding the Fourth Proportional to 87,744.79, 121,079.73 and 53,737.75
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Solution
The fourth proportional to 87,744.79, 121,079.73 and 53,737.75 is: 74,153.15
Step by Step Solution
- Step 1: Write the proportion equation
87,744.79 : 121,079.73 = 53,737.75 : x - Step 2: Convert to fraction form
87,744.79/121,079.73 = 53,737.75/x - Step 3: Cross multiply
87,744.79x = 121,079.73 × 53,737.75 - Step 4: Simplify right side
87,744.79x = 6,506,552,260.81 - Step 5: Solve for x
x = 6,506,552,260.81/87,744.79 - Step 6: Final answer
x = 74,153.15
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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.