Finding the Fourth Proportional to 99,689.95, 149,474.68 and 39,727.65
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Solution
The fourth proportional to 99,689.95, 149,474.68 and 39,727.65 is: 59,567.47
Step by Step Solution
- Step 1: Write the proportion equation
99,689.95 : 149,474.68 = 39,727.65 : x - Step 2: Convert to fraction form
99,689.95/149,474.68 = 39,727.65/x - Step 3: Cross multiply
99,689.95x = 149,474.68 × 39,727.65 - Step 4: Simplify right side
99,689.95x = 5,938,277,770.90 - Step 5: Solve for x
x = 5,938,277,770.90/99,689.95 - Step 6: Final answer
x = 59,567.47
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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.