Finding the Fourth Proportional to 78,577.99, 117,855.46 and 25,988.23
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Solution
The fourth proportional to 78,577.99, 117,855.46 and 25,988.23 is: 38,978.53
Step by Step Solution
- Step 1: Write the proportion equation
78,577.99 : 117,855.46 = 25,988.23 : x - Step 2: Convert to fraction form
78,577.99/117,855.46 = 25,988.23/x - Step 3: Cross multiply
78,577.99x = 117,855.46 × 25,988.23 - Step 4: Simplify right side
78,577.99x = 3,062,854,801.24 - Step 5: Solve for x
x = 3,062,854,801.24/78,577.99 - Step 6: Final answer
x = 38,978.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.