Finding the Fourth Proportional to 85,438.74, 128,154.24 and 29,283.84
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Solution
The fourth proportional to 85,438.74, 128,154.24 and 29,283.84 is: 43,924.43
Step by Step Solution
- Step 1: Write the proportion equation
85,438.74 : 128,154.24 = 29,283.84 : x - Step 2: Convert to fraction form
85,438.74/128,154.24 = 29,283.84/x - Step 3: Cross multiply
85,438.74x = 128,154.24 × 29,283.84 - Step 4: Simplify right side
85,438.74x = 3,752,848,259.48 - Step 5: Solve for x
x = 3,752,848,259.48/85,438.74 - Step 6: Final answer
x = 43,924.43
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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.