Finding the Fourth Proportional to 105,001.75, 157,502.63 and 31,129.75
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Solution
The fourth proportional to 105,001.75, 157,502.63 and 31,129.75 is: 46,694.63
Step by Step Solution
- Step 1: Write the proportion equation
105,001.75 : 157,502.63 = 31,129.75 : x - Step 2: Convert to fraction form
105,001.75/157,502.63 = 31,129.75/x - Step 3: Cross multiply
105,001.75x = 157,502.63 × 31,129.75 - Step 4: Simplify right side
105,001.75x = 4,903,017,496.24 - Step 5: Solve for x
x = 4,903,017,496.24/105,001.75 - Step 6: Final answer
x = 46,694.63
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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.