Finding the Fourth Proportional to 103,484.75, 142,809.14 and 58,772.75
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Solution
The fourth proportional to 103,484.75, 142,809.14 and 58,772.75 is: 81,106.50
Step by Step Solution
- Step 1: Write the proportion equation
103,484.75 : 142,809.14 = 58,772.75 : x - Step 2: Convert to fraction form
103,484.75/142,809.14 = 58,772.75/x - Step 3: Cross multiply
103,484.75x = 142,809.14 × 58,772.75 - Step 4: Simplify right side
103,484.75x = 8,393,285,882.94 - Step 5: Solve for x
x = 8,393,285,882.94/103,484.75 - Step 6: Final answer
x = 81,106.50
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1.5x scale
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.