Finding the Fourth Proportional to 79,424.70, 109,532.95 and 53,969.23
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Solution
The fourth proportional to 79,424.70, 109,532.95 and 53,969.23 is: 74,427.84
Step by Step Solution
- Step 1: Write the proportion equation
79,424.70 : 109,532.95 = 53,969.23 : x - Step 2: Convert to fraction form
79,424.70/109,532.95 = 53,969.23/x - Step 3: Cross multiply
79,424.70x = 109,532.95 × 53,969.23 - Step 4: Simplify right side
79,424.70x = 5,911,408,971.13 - Step 5: Solve for x
x = 5,911,408,971.13/79,424.70 - Step 6: Final answer
x = 74,427.84
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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.