Finding the Fourth Proportional to 87,918.07, 121,327.01 and 51,612.41
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Solution
The fourth proportional to 87,918.07, 121,327.01 and 51,612.41 is: 71,225.17
Step by Step Solution
- Step 1: Write the proportion equation
87,918.07 : 121,327.01 = 51,612.41 : x - Step 2: Convert to fraction form
87,918.07/121,327.01 = 51,612.41/x - Step 3: Cross multiply
87,918.07x = 121,327.01 × 51,612.41 - Step 4: Simplify right side
87,918.07x = 6,261,979,384.19 - Step 5: Solve for x
x = 6,261,979,384.19/87,918.07 - Step 6: Final answer
x = 71,225.17
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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.