Finding the Fourth Proportional to 81,985.79, 113,148.44 and 47,992.23
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Solution
The fourth proportional to 81,985.79, 113,148.44 and 47,992.23 is: 66,233.99
Step by Step Solution
- Step 1: Write the proportion equation
81,985.79 : 113,148.44 = 47,992.23 : x - Step 2: Convert to fraction form
81,985.79/113,148.44 = 47,992.23/x - Step 3: Cross multiply
81,985.79x = 113,148.44 × 47,992.23 - Step 4: Simplify right side
81,985.79x = 5,430,245,956.62 - Step 5: Solve for x
x = 5,430,245,956.62/81,985.79 - Step 6: Final answer
x = 66,233.99
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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.