Finding the Fourth Proportional to 86,134.44, 129,221.16 and 29,977.20
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Solution
The fourth proportional to 86,134.44, 129,221.16 and 29,977.20 is: 44,972.59
Step by Step Solution
- Step 1: Write the proportion equation
86,134.44 : 129,221.16 = 29,977.20 : x - Step 2: Convert to fraction form
86,134.44/129,221.16 = 29,977.20/x - Step 3: Cross multiply
86,134.44x = 129,221.16 × 29,977.20 - Step 4: Simplify right side
86,134.44x = 3,873,688,557.55 - Step 5: Solve for x
x = 3,873,688,557.55/86,134.44 - Step 6: Final answer
x = 44,972.59
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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.