Finding the Fourth Proportional to 81,038.42, 121,509.63 and 27,711.53
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Solution
The fourth proportional to 81,038.42, 121,509.63 and 27,711.53 is: 41,550.88
Step by Step Solution
- Step 1: Write the proportion equation
81,038.42 : 121,509.63 = 27,711.53 : x - Step 2: Convert to fraction form
81,038.42/121,509.63 = 27,711.53/x - Step 3: Cross multiply
81,038.42x = 121,509.63 × 27,711.53 - Step 4: Simplify right side
81,038.42x = 3,367,217,149.49 - Step 5: Solve for x
x = 3,367,217,149.49/81,038.42 - Step 6: Final answer
x = 41,550.88
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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.