Finding the Fourth Proportional to 81,199.24, 121,741.62 and 31,237.36
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Solution
The fourth proportional to 81,199.24, 121,741.62 and 31,237.36 is: 46,834.02
Step by Step Solution
- Step 1: Write the proportion equation
81,199.24 : 121,741.62 = 31,237.36 : x - Step 2: Convert to fraction form
81,199.24/121,741.62 = 31,237.36/x - Step 3: Cross multiply
81,199.24x = 121,741.62 × 31,237.36 - Step 4: Simplify right side
81,199.24x = 3,802,886,810.92 - Step 5: Solve for x
x = 3,802,886,810.92/81,199.24 - Step 6: Final answer
x = 46,834.02
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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.