Finding the Fourth Proportional to 75,686.18, 104,367.74 and 56,535.93
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Solution
The fourth proportional to 75,686.18, 104,367.74 and 56,535.93 is: 77,960.43
Step by Step Solution
- Step 1: Write the proportion equation
75,686.18 : 104,367.74 = 56,535.93 : x - Step 2: Convert to fraction form
75,686.18/104,367.74 = 56,535.93/x - Step 3: Cross multiply
75,686.18x = 104,367.74 × 56,535.93 - Step 4: Simplify right side
75,686.18x = 5,900,526,960.22 - Step 5: Solve for x
x = 5,900,526,960.22/75,686.18 - Step 6: Final answer
x = 77,960.43
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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.