Finding the Fourth Proportional to 87,259.80, 120,415.34 and 53,325.09
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Solution
The fourth proportional to 87,259.80, 120,415.34 and 53,325.09 is: 73,586.68
Step by Step Solution
- Step 1: Write the proportion equation
87,259.80 : 120,415.34 = 53,325.09 : x - Step 2: Convert to fraction form
87,259.80/120,415.34 = 53,325.09/x - Step 3: Cross multiply
87,259.80x = 120,415.34 × 53,325.09 - Step 4: Simplify right side
87,259.80x = 6,421,158,842.88 - Step 5: Solve for x
x = 6,421,158,842.88/87,259.80 - Step 6: Final answer
x = 73,586.68
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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.