Finding the Fourth Proportional to 83,698.30, 115,523.58 and 47,908.99
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Solution
The fourth proportional to 83,698.30, 115,523.58 and 47,908.99 is: 66,125.81
Step by Step Solution
- Step 1: Write the proportion equation
83,698.30 : 115,523.58 = 47,908.99 : x - Step 2: Convert to fraction form
83,698.30/115,523.58 = 47,908.99/x - Step 3: Cross multiply
83,698.30x = 115,523.58 × 47,908.99 - Step 4: Simplify right side
83,698.30x = 5,534,618,038.98 - Step 5: Solve for x
x = 5,534,618,038.98/83,698.30 - Step 6: Final answer
x = 66,125.81
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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.