Finding the Fourth Proportional to 86,153.54, 129,142.14 and 29,947.52
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Solution
The fourth proportional to 86,153.54, 129,142.14 and 29,947.52 is: 44,890.63
Step by Step Solution
- Step 1: Write the proportion equation
86,153.54 : 129,142.14 = 29,947.52 : x - Step 2: Convert to fraction form
86,153.54/129,142.14 = 29,947.52/x - Step 3: Cross multiply
86,153.54x = 129,142.14 × 29,947.52 - Step 4: Simplify right side
86,153.54x = 3,867,486,820.49 - Step 5: Solve for x
x = 3,867,486,820.49/86,153.54 - Step 6: Final answer
x = 44,890.63
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.