Finding the Fourth Proportional to 76,986.59, 106,240.44 and 42,995.68
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Solution
The fourth proportional to 76,986.59, 106,240.44 and 42,995.68 is: 59,333.45
Step by Step Solution
- Step 1: Write the proportion equation
76,986.59 : 106,240.44 = 42,995.68 : x - Step 2: Convert to fraction form
76,986.59/106,240.44 = 42,995.68/x - Step 3: Cross multiply
76,986.59x = 106,240.44 × 42,995.68 - Step 4: Simplify right side
76,986.59x = 4,567,879,856.93 - Step 5: Solve for x
x = 4,567,879,856.93/76,986.59 - Step 6: Final answer
x = 59,333.45
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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.