Finding the Fourth Proportional to 75,862.13, 104,689.80 and 42,328.13
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Solution
The fourth proportional to 75,862.13, 104,689.80 and 42,328.13 is: 58,412.85
Step by Step Solution
- Step 1: Write the proportion equation
75,862.13 : 104,689.80 = 42,328.13 : x - Step 2: Convert to fraction form
75,862.13/104,689.80 = 42,328.13/x - Step 3: Cross multiply
75,862.13x = 104,689.80 × 42,328.13 - Step 4: Simplify right side
75,862.13x = 4,431,322,940.63 - Step 5: Solve for x
x = 4,431,322,940.63/75,862.13 - Step 6: Final answer
x = 58,412.85
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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.