Finding the Fourth Proportional to 87,266.36, 120,438.70 and 51,459.71
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Solution
The fourth proportional to 87,266.36, 120,438.70 and 51,459.71 is: 71,020.95
Step by Step Solution
- Step 1: Write the proportion equation
87,266.36 : 120,438.70 = 51,459.71 : x - Step 2: Convert to fraction form
87,266.36/120,438.70 = 51,459.71/x - Step 3: Cross multiply
87,266.36x = 120,438.70 × 51,459.71 - Step 4: Simplify right side
87,266.36x = 6,197,739,843.93 - Step 5: Solve for x
x = 6,197,739,843.93/87,266.36 - Step 6: Final answer
x = 71,020.95
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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.