Finding the Fourth Proportional to 106,959.41, 147,619.43 and 61,628.70
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Solution
The fourth proportional to 106,959.41, 147,619.43 and 61,628.70 is: 85,056.50
Step by Step Solution
- Step 1: Write the proportion equation
106,959.41 : 147,619.43 = 61,628.70 : x - Step 2: Convert to fraction form
106,959.41/147,619.43 = 61,628.70/x - Step 3: Cross multiply
106,959.41x = 147,619.43 × 61,628.70 - Step 4: Simplify right side
106,959.41x = 9,097,593,565.64 - Step 5: Solve for x
x = 9,097,593,565.64/106,959.41 - Step 6: Final answer
x = 85,056.50
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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.