Finding the Fourth Proportional to 86,937.60, 130,407.36 and 27,772.80
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Solution
The fourth proportional to 86,937.60, 130,407.36 and 27,772.80 is: 41,659.51
Step by Step Solution
- Step 1: Write the proportion equation
86,937.60 : 130,407.36 = 27,772.80 : x - Step 2: Convert to fraction form
86,937.60/130,407.36 = 27,772.80/x - Step 3: Cross multiply
86,937.60x = 130,407.36 × 27,772.80 - Step 4: Simplify right side
86,937.60x = 3,621,777,527.81 - Step 5: Solve for x
x = 3,621,777,527.81/86,937.60 - Step 6: Final answer
x = 41,659.51
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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.