Finding the Fourth Proportional to 74,435.68, 102,721.62 and 40,444.26
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Solution
The fourth proportional to 74,435.68, 102,721.62 and 40,444.26 is: 55,813.28
Step by Step Solution
- Step 1: Write the proportion equation
74,435.68 : 102,721.62 = 40,444.26 : x - Step 2: Convert to fraction form
74,435.68/102,721.62 = 40,444.26/x - Step 3: Cross multiply
74,435.68x = 102,721.62 × 40,444.26 - Step 4: Simplify right side
74,435.68x = 4,154,499,903.88 - Step 5: Solve for x
x = 4,154,499,903.88/74,435.68 - Step 6: Final answer
x = 55,813.28
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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.