Finding the Fourth Proportional to 109,602.81, 164,305.49 and 39,432.75
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Solution
The fourth proportional to 109,602.81, 164,305.49 and 39,432.75 is: 59,113.60
Step by Step Solution
- Step 1: Write the proportion equation
109,602.81 : 164,305.49 = 39,432.75 : x - Step 2: Convert to fraction form
109,602.81/164,305.49 = 39,432.75/x - Step 3: Cross multiply
109,602.81x = 164,305.49 × 39,432.75 - Step 4: Simplify right side
109,602.81x = 6,479,017,113.63 - Step 5: Solve for x
x = 6,479,017,113.63/109,602.81 - Step 6: Final answer
x = 59,113.60
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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.