Finding the Fourth Proportional to 75,643.04, 104,387.36 and 42,116.96
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Solution
The fourth proportional to 75,643.04, 104,387.36 and 42,116.96 is: 58,121.39
Step by Step Solution
- Step 1: Write the proportion equation
75,643.04 : 104,387.36 = 42,116.96 : x - Step 2: Convert to fraction form
75,643.04/104,387.36 = 42,116.96/x - Step 3: Cross multiply
75,643.04x = 104,387.36 × 42,116.96 - Step 4: Simplify right side
75,643.04x = 4,396,478,265.63 - Step 5: Solve for x
x = 4,396,478,265.63/75,643.04 - Step 6: Final answer
x = 58,121.39
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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.