Finding the Fourth Proportional to 74,368.84, 102,628.43 and 40,376.66
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Solution
The fourth proportional to 74,368.84, 102,628.43 and 40,376.66 is: 55,719.48
Step by Step Solution
- Step 1: Write the proportion equation
74,368.84 : 102,628.43 = 40,376.66 : x - Step 2: Convert to fraction form
74,368.84/102,628.43 = 40,376.66/x - Step 3: Cross multiply
74,368.84x = 102,628.43 × 40,376.66 - Step 4: Simplify right side
74,368.84x = 4,143,793,224.44 - Step 5: Solve for x
x = 4,143,793,224.44/74,368.84 - Step 6: Final answer
x = 55,719.48
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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.