Finding the Fourth Proportional to 99,891.37, 149,836.51 and 40,726.81
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Solution
The fourth proportional to 99,891.37, 149,836.51 and 40,726.81 is: 61,089.99
Step by Step Solution
- Step 1: Write the proportion equation
99,891.37 : 149,836.51 = 40,726.81 : x - Step 2: Convert to fraction form
99,891.37/149,836.51 = 40,726.81/x - Step 3: Cross multiply
99,891.37x = 149,836.51 × 40,726.81 - Step 4: Simplify right side
99,891.37x = 6,102,363,073.83 - Step 5: Solve for x
x = 6,102,363,073.83/99,891.37 - Step 6: Final answer
x = 61,089.99
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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.