Finding the Fourth Proportional to 79,485.31, 109,641.03 and 47,197.99
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Solution
The fourth proportional to 79,485.31, 109,641.03 and 47,197.99 is: 65,104.31
Step by Step Solution
- Step 1: Write the proportion equation
79,485.31 : 109,641.03 = 47,197.99 : x - Step 2: Convert to fraction form
79,485.31/109,641.03 = 47,197.99/x - Step 3: Cross multiply
79,485.31x = 109,641.03 × 47,197.99 - Step 4: Simplify right side
79,485.31x = 5,174,836,237.53 - Step 5: Solve for x
x = 5,174,836,237.53/79,485.31 - Step 6: Final answer
x = 65,104.31
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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.