Finding the Fourth Proportional to 75,643.95, 104,387.75 and 41,651.70
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Solution
The fourth proportional to 75,643.95, 104,387.75 and 41,651.70 is: 57,478.85
Step by Step Solution
- Step 1: Write the proportion equation
75,643.95 : 104,387.75 = 41,651.70 : x - Step 2: Convert to fraction form
75,643.95/104,387.75 = 41,651.70/x - Step 3: Cross multiply
75,643.95x = 104,387.75 × 41,651.70 - Step 4: Simplify right side
75,643.95x = 4,347,927,038.42 - Step 5: Solve for x
x = 4,347,927,038.42/75,643.95 - Step 6: Final answer
x = 57,478.85
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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.