Finding the Fourth Proportional to 75,643.20, 113,464.80 and 46,045.80
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Solution
The fourth proportional to 75,643.20, 113,464.80 and 46,045.80 is: 69,068.70
Step by Step Solution
- Step 1: Write the proportion equation
75,643.20 : 113,464.80 = 46,045.80 : x - Step 2: Convert to fraction form
75,643.20/113,464.80 = 46,045.80/x - Step 3: Cross multiply
75,643.20x = 113,464.80 × 46,045.80 - Step 4: Simplify right side
75,643.20x = 5,224,577,487.84 - Step 5: Solve for x
x = 5,224,577,487.84/75,643.20 - Step 6: Final answer
x = 69,068.70
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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.