Finding the Fourth Proportional to 86,959.80, 130,467.72 and 39,591.84
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Solution
The fourth proportional to 86,959.80, 130,467.72 and 39,591.84 is: 59,400.52
Step by Step Solution
- Step 1: Write the proportion equation
86,959.80 : 130,467.72 = 39,591.84 : x - Step 2: Convert to fraction form
86,959.80/130,467.72 = 39,591.84/x - Step 3: Cross multiply
86,959.80x = 130,467.72 × 39,591.84 - Step 4: Simplify right side
86,959.80x = 5,165,457,095.40 - Step 5: Solve for x
x = 5,165,457,095.40/86,959.80 - Step 6: Final answer
x = 59,400.52
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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.