Finding the Fourth Proportional to 79,312.19, 109,456.39 and 45,325.70
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Solution
The fourth proportional to 79,312.19, 109,456.39 and 45,325.70 is: 62,552.65
Step by Step Solution
- Step 1: Write the proportion equation
79,312.19 : 109,456.39 = 45,325.70 : x - Step 2: Convert to fraction form
79,312.19/109,456.39 = 45,325.70/x - Step 3: Cross multiply
79,312.19x = 109,456.39 × 45,325.70 - Step 4: Simplify right side
79,312.19x = 4,961,187,496.22 - Step 5: Solve for x
x = 4,961,187,496.22/79,312.19 - Step 6: Final answer
x = 62,552.65
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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.