Finding the Fourth Proportional to 75,687.72, 104,449.08 and 43,875.09
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Solution
The fourth proportional to 75,687.72, 104,449.08 and 43,875.09 is: 60,547.64
Step by Step Solution
- Step 1: Write the proportion equation
75,687.72 : 104,449.08 = 43,875.09 : x - Step 2: Convert to fraction form
75,687.72/104,449.08 = 43,875.09/x - Step 3: Cross multiply
75,687.72x = 104,449.08 × 43,875.09 - Step 4: Simplify right side
75,687.72x = 4,582,712,785.42 - Step 5: Solve for x
x = 4,582,712,785.42/75,687.72 - Step 6: Final answer
x = 60,547.64
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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.