Finding the Fourth Proportional to 99,693.08, 137,574.42 and 54,981.08
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Solution
The fourth proportional to 99,693.08, 137,574.42 and 54,981.08 is: 75,872.77
Step by Step Solution
- Step 1: Write the proportion equation
99,693.08 : 137,574.42 = 54,981.08 : x - Step 2: Convert to fraction form
99,693.08/137,574.42 = 54,981.08/x - Step 3: Cross multiply
99,693.08x = 137,574.42 × 54,981.08 - Step 4: Simplify right side
99,693.08x = 7,563,990,191.97 - Step 5: Solve for x
x = 7,563,990,191.97/99,693.08 - Step 6: Final answer
x = 75,872.77
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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.