Finding the Fourth Proportional to 79,419.84, 109,599.68 and 43,121.34
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Solution
The fourth proportional to 79,419.84, 109,599.68 and 43,121.34 is: 59,507.61
Step by Step Solution
- Step 1: Write the proportion equation
79,419.84 : 109,599.68 = 43,121.34 : x - Step 2: Convert to fraction form
79,419.84/109,599.68 = 43,121.34/x - Step 3: Cross multiply
79,419.84x = 109,599.68 × 43,121.34 - Step 4: Simplify right side
79,419.84x = 4,726,085,065.17 - Step 5: Solve for x
x = 4,726,085,065.17/79,419.84 - Step 6: Final answer
x = 59,507.61
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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.