Finding the Fourth Proportional to 105,487.24, 145,572.66 and 57,740.92
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Solution
The fourth proportional to 105,487.24, 145,572.66 and 57,740.92 is: 79,682.62
Step by Step Solution
- Step 1: Write the proportion equation
105,487.24 : 145,572.66 = 57,740.92 : x - Step 2: Convert to fraction form
105,487.24/145,572.66 = 57,740.92/x - Step 3: Cross multiply
105,487.24x = 145,572.66 × 57,740.92 - Step 4: Simplify right side
105,487.24x = 8,405,499,315.25 - Step 5: Solve for x
x = 8,405,499,315.25/105,487.24 - Step 6: Final answer
x = 79,682.62
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1.5x scale
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.