Finding the Fourth Proportional to 83,798.70, 115,609.28 and 47,969.42
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Solution
The fourth proportional to 83,798.70, 115,609.28 and 47,969.42 is: 66,178.95
Step by Step Solution
- Step 1: Write the proportion equation
83,798.70 : 115,609.28 = 47,969.42 : x - Step 2: Convert to fraction form
83,798.70/115,609.28 = 47,969.42/x - Step 3: Cross multiply
83,798.70x = 115,609.28 × 47,969.42 - Step 4: Simplify right side
83,798.70x = 5,545,710,108.22 - Step 5: Solve for x
x = 5,545,710,108.22/83,798.70 - Step 6: Final answer
x = 66,178.95
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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.