Finding the Fourth Proportional to 79,643.84, 119,539.72 and 40,228.68
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Solution
The fourth proportional to 79,643.84, 119,539.72 and 40,228.68 is: 60,380.38
Step by Step Solution
- Step 1: Write the proportion equation
79,643.84 : 119,539.72 = 40,228.68 : x - Step 2: Convert to fraction form
79,643.84/119,539.72 = 40,228.68/x - Step 3: Cross multiply
79,643.84x = 119,539.72 × 40,228.68 - Step 4: Simplify right side
79,643.84x = 4,808,925,143.17 - Step 5: Solve for x
x = 4,808,925,143.17/79,643.84 - Step 6: Final answer
x = 60,380.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.