Finding the Fourth Proportional to 87,918.57, 121,327.70 and 51,612.91
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Solution
The fourth proportional to 87,918.57, 121,327.70 and 51,612.91 is: 71,225.85
Step by Step Solution
- Step 1: Write the proportion equation
87,918.57 : 121,327.70 = 51,612.91 : x - Step 2: Convert to fraction form
87,918.57/121,327.70 = 51,612.91/x - Step 3: Cross multiply
87,918.57x = 121,327.70 × 51,612.91 - Step 4: Simplify right side
87,918.57x = 6,262,075,099.22 - Step 5: Solve for x
x = 6,262,075,099.22/87,918.57 - Step 6: Final answer
x = 71,225.85
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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.