Finding the Fourth Proportional to 71,478.78, 107,247.36 and 57,569.46
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Solution
The fourth proportional to 71,478.78, 107,247.36 and 57,569.46 is: 86,377.70
Step by Step Solution
- Step 1: Write the proportion equation
71,478.78 : 107,247.36 = 57,569.46 : x - Step 2: Convert to fraction form
71,478.78/107,247.36 = 57,569.46/x - Step 3: Cross multiply
71,478.78x = 107,247.36 × 57,569.46 - Step 4: Simplify right side
71,478.78x = 6,174,172,601.63 - Step 5: Solve for x
x = 6,174,172,601.63/71,478.78 - Step 6: Final answer
x = 86,377.70
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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.