Finding the Fourth Proportional to 81,989.88, 122,986.74 and 29,398.20
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Solution
The fourth proportional to 81,989.88, 122,986.74 and 29,398.20 is: 44,097.99
Step by Step Solution
- Step 1: Write the proportion equation
81,989.88 : 122,986.74 = 29,398.20 : x - Step 2: Convert to fraction form
81,989.88/122,986.74 = 29,398.20/x - Step 3: Cross multiply
81,989.88x = 122,986.74 × 29,398.20 - Step 4: Simplify right side
81,989.88x = 3,615,588,779.87 - Step 5: Solve for x
x = 3,615,588,779.87/81,989.88 - Step 6: Final answer
x = 44,097.99
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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.