Finding the Fourth Proportional to 86,680.60, 129,798.93 and 59,989.63
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Solution
The fourth proportional to 86,680.60, 129,798.93 and 59,989.63 is: 89,830.82
Step by Step Solution
- Step 1: Write the proportion equation
86,680.60 : 129,798.93 = 59,989.63 : x - Step 2: Convert to fraction form
86,680.60/129,798.93 = 59,989.63/x - Step 3: Cross multiply
86,680.60x = 129,798.93 × 59,989.63 - Step 4: Simplify right side
86,680.60x = 7,786,589,785.10 - Step 5: Solve for x
x = 7,786,589,785.10/86,680.60 - Step 6: Final answer
x = 89,830.82
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1.5x scale
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.