Finding the Fourth Proportional to 99,543.80, 149,315.70 and 47,055.80
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Solution
The fourth proportional to 99,543.80, 149,315.70 and 47,055.80 is: 70,583.70
Step by Step Solution
- Step 1: Write the proportion equation
99,543.80 : 149,315.70 = 47,055.80 : x - Step 2: Convert to fraction form
99,543.80/149,315.70 = 47,055.80/x - Step 3: Cross multiply
99,543.80x = 149,315.70 × 47,055.80 - Step 4: Simplify right side
99,543.80x = 7,026,169,716.06 - Step 5: Solve for x
x = 7,026,169,716.06/99,543.80 - Step 6: Final answer
x = 70,583.70
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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.