Finding the Fourth Proportional to 105,723.18, 145,899.99 and 57,973.68
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Solution
The fourth proportional to 105,723.18, 145,899.99 and 57,973.68 is: 80,004.78
Step by Step Solution
- Step 1: Write the proportion equation
105,723.18 : 145,899.99 = 57,973.68 : x - Step 2: Convert to fraction form
105,723.18/145,899.99 = 57,973.68/x - Step 3: Cross multiply
105,723.18x = 145,899.99 × 57,973.68 - Step 4: Simplify right side
105,723.18x = 8,458,359,332.26 - Step 5: Solve for x
x = 8,458,359,332.26/105,723.18 - Step 6: Final answer
x = 80,004.78
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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.