Finding the Fourth Proportional to 81,110.13, 111,869.76 and 48,811.08
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Solution
The fourth proportional to 81,110.13, 111,869.76 and 48,811.08 is: 67,321.85
Step by Step Solution
- Step 1: Write the proportion equation
81,110.13 : 111,869.76 = 48,811.08 : x - Step 2: Convert to fraction form
81,110.13/111,869.76 = 48,811.08/x - Step 3: Cross multiply
81,110.13x = 111,869.76 × 48,811.08 - Step 4: Simplify right side
81,110.13x = 5,460,483,804.94 - Step 5: Solve for x
x = 5,460,483,804.94/81,110.13 - Step 6: Final answer
x = 67,321.85
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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.