Finding the Fourth Proportional to 103,512.80, 142,859.56 and 57,577.08
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Solution
The fourth proportional to 103,512.80, 142,859.56 and 57,577.08 is: 79,462.99
Step by Step Solution
- Step 1: Write the proportion equation
103,512.80 : 142,859.56 = 57,577.08 : x - Step 2: Convert to fraction form
103,512.80/142,859.56 = 57,577.08/x - Step 3: Cross multiply
103,512.80x = 142,859.56 × 57,577.08 - Step 4: Simplify right side
103,512.80x = 8,225,436,314.88 - Step 5: Solve for x
x = 8,225,436,314.88/103,512.80 - Step 6: Final answer
x = 79,462.99
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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.