Finding the Fourth Proportional to 79,237.63, 118,853.36 and 31,838.50
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Solution
The fourth proportional to 79,237.63, 118,853.36 and 31,838.50 is: 47,756.51
Step by Step Solution
- Step 1: Write the proportion equation
79,237.63 : 118,853.36 = 31,838.50 : x - Step 2: Convert to fraction form
79,237.63/118,853.36 = 31,838.50/x - Step 3: Cross multiply
79,237.63x = 118,853.36 × 31,838.50 - Step 4: Simplify right side
79,237.63x = 3,784,112,811.13 - Step 5: Solve for x
x = 3,784,112,811.13/79,237.63 - Step 6: Final answer
x = 47,756.51
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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.