Finding the Fourth Proportional to 87,993.36, 121,531.05 and 59,649.84
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Solution
The fourth proportional to 87,993.36, 121,531.05 and 59,649.84 is: 82,384.71
Step by Step Solution
- Step 1: Write the proportion equation
87,993.36 : 121,531.05 = 59,649.84 : x - Step 2: Convert to fraction form
87,993.36/121,531.05 = 59,649.84/x - Step 3: Cross multiply
87,993.36x = 121,531.05 × 59,649.84 - Step 4: Simplify right side
87,993.36x = 7,249,307,687.53 - Step 5: Solve for x
x = 7,249,307,687.53/87,993.36 - Step 6: Final answer
x = 82,384.71
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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.