Finding the Fourth Proportional to 86,407.68, 119,257.84 and 68,638.30
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Solution
The fourth proportional to 86,407.68, 119,257.84 and 68,638.30 is: 94,732.96
Step by Step Solution
- Step 1: Write the proportion equation
86,407.68 : 119,257.84 = 68,638.30 : x - Step 2: Convert to fraction form
86,407.68/119,257.84 = 68,638.30/x - Step 3: Cross multiply
86,407.68x = 119,257.84 × 68,638.30 - Step 4: Simplify right side
86,407.68x = 8,185,655,399.27 - Step 5: Solve for x
x = 8,185,655,399.27/86,407.68 - Step 6: Final answer
x = 94,732.96
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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.