Finding the Fourth Proportional to 78,927.21, 118,201.68 and 57,522.56
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Solution
The fourth proportional to 78,927.21, 118,201.68 and 57,522.56 is: 86,145.99
Step by Step Solution
- Step 1: Write the proportion equation
78,927.21 : 118,201.68 = 57,522.56 : x - Step 2: Convert to fraction form
78,927.21/118,201.68 = 57,522.56/x - Step 3: Cross multiply
78,927.21x = 118,201.68 × 57,522.56 - Step 4: Simplify right side
78,927.21x = 6,799,262,638.89 - Step 5: Solve for x
x = 6,799,262,638.89/78,927.21 - Step 6: Final answer
x = 86,145.99
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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.