Finding the Fourth Proportional to 79,217.16, 109,318.68 and 43,405.08
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Solution
The fourth proportional to 79,217.16, 109,318.68 and 43,405.08 is: 59,898.46
Step by Step Solution
- Step 1: Write the proportion equation
79,217.16 : 109,318.68 = 43,405.08 : x - Step 2: Convert to fraction form
79,217.16/109,318.68 = 43,405.08/x - Step 3: Cross multiply
79,217.16x = 109,318.68 × 43,405.08 - Step 4: Simplify right side
79,217.16x = 4,744,986,050.89 - Step 5: Solve for x
x = 4,744,986,050.89/79,217.16 - Step 6: Final answer
x = 59,898.46
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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.