Finding the Fourth Proportional to 75,691.08, 104,455.62 and 42,157.80
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Solution
The fourth proportional to 75,691.08, 104,455.62 and 42,157.80 is: 58,178.84
Step by Step Solution
- Step 1: Write the proportion equation
75,691.08 : 104,455.62 = 42,157.80 : x - Step 2: Convert to fraction form
75,691.08/104,455.62 = 42,157.80/x - Step 3: Cross multiply
75,691.08x = 104,455.62 × 42,157.80 - Step 4: Simplify right side
75,691.08x = 4,403,619,136.84 - Step 5: Solve for x
x = 4,403,619,136.84/75,691.08 - Step 6: Final answer
x = 58,178.84
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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.