Finding the Fourth Proportional to 78,387.84, 108,178.95 and 48,174.42
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Solution
The fourth proportional to 78,387.84, 108,178.95 and 48,174.42 is: 66,482.99
Step by Step Solution
- Step 1: Write the proportion equation
78,387.84 : 108,178.95 = 48,174.42 : x - Step 2: Convert to fraction form
78,387.84/108,178.95 = 48,174.42/x - Step 3: Cross multiply
78,387.84x = 108,178.95 × 48,174.42 - Step 4: Simplify right side
78,387.84x = 5,211,458,172.46 - Step 5: Solve for x
x = 5,211,458,172.46/78,387.84 - Step 6: Final answer
x = 66,482.99
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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.