Finding the Fourth Proportional to 81,636.24, 112,711.16 and 49,823.59
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Solution
The fourth proportional to 81,636.24, 112,711.16 and 49,823.59 is: 68,788.99
Step by Step Solution
- Step 1: Write the proportion equation
81,636.24 : 112,711.16 = 49,823.59 : x - Step 2: Convert to fraction form
81,636.24/112,711.16 = 49,823.59/x - Step 3: Cross multiply
81,636.24x = 112,711.16 × 49,823.59 - Step 4: Simplify right side
81,636.24x = 5,615,674,624.26 - Step 5: Solve for x
x = 5,615,674,624.26/81,636.24 - Step 6: Final answer
x = 68,788.99
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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.