Finding the Fourth Proportional to 70,502.85, 105,729.63 and 28,371.99
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Solution
The fourth proportional to 70,502.85, 105,729.63 and 28,371.99 is: 42,548.07
Step by Step Solution
- Step 1: Write the proportion equation
70,502.85 : 105,729.63 = 28,371.99 : x - Step 2: Convert to fraction form
70,502.85/105,729.63 = 28,371.99/x - Step 3: Cross multiply
70,502.85x = 105,729.63 × 28,371.99 - Step 4: Simplify right side
70,502.85x = 2,999,760,005.06 - Step 5: Solve for x
x = 2,999,760,005.06/70,502.85 - Step 6: Final answer
x = 42,548.07
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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.