Finding the Fourth Proportional to 74,497.80, 102,806.13 and 55,462.68
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Solution
The fourth proportional to 74,497.80, 102,806.13 and 55,462.68 is: 76,537.88
Step by Step Solution
- Step 1: Write the proportion equation
74,497.80 : 102,806.13 = 55,462.68 : x - Step 2: Convert to fraction form
74,497.80/102,806.13 = 55,462.68/x - Step 3: Cross multiply
74,497.80x = 102,806.13 × 55,462.68 - Step 4: Simplify right side
74,497.80x = 5,701,903,490.23 - Step 5: Solve for x
x = 5,701,903,490.23/74,497.80 - Step 6: Final answer
x = 76,537.88
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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.