Finding the Fourth Proportional to 87,799.19, 121,155.23 and 51,507.95
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Solution
The fourth proportional to 87,799.19, 121,155.23 and 51,507.95 is: 71,076.48
Step by Step Solution
- Step 1: Write the proportion equation
87,799.19 : 121,155.23 = 51,507.95 : x - Step 2: Convert to fraction form
87,799.19/121,155.23 = 51,507.95/x - Step 3: Cross multiply
87,799.19x = 121,155.23 × 51,507.95 - Step 4: Simplify right side
87,799.19x = 6,240,457,052.07 - Step 5: Solve for x
x = 6,240,457,052.07/87,799.19 - Step 6: Final answer
x = 71,076.48
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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.