Finding the Fourth Proportional to 70,762.64, 106,160.36 and 31,320.09
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Solution
The fourth proportional to 70,762.64, 106,160.36 and 31,320.09 is: 46,987.39
Step by Step Solution
- Step 1: Write the proportion equation
70,762.64 : 106,160.36 = 31,320.09 : x - Step 2: Convert to fraction form
70,762.64/106,160.36 = 31,320.09/x - Step 3: Cross multiply
70,762.64x = 106,160.36 × 31,320.09 - Step 4: Simplify right side
70,762.64x = 3,324,951,873.03 - Step 5: Solve for x
x = 3,324,951,873.03/70,762.64 - Step 6: Final answer
x = 46,987.39
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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.