Finding the Fourth Proportional to 90,206.23, 135,434.49 and 56,827.75
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Solution
The fourth proportional to 90,206.23, 135,434.49 and 56,827.75 is: 85,320.46
Step by Step Solution
- Step 1: Write the proportion equation
90,206.23 : 135,434.49 = 56,827.75 : x - Step 2: Convert to fraction form
90,206.23/135,434.49 = 56,827.75/x - Step 3: Cross multiply
90,206.23x = 135,434.49 × 56,827.75 - Step 4: Simplify right side
90,206.23x = 7,696,437,339.10 - Step 5: Solve for x
x = 7,696,437,339.10/90,206.23 - Step 6: Final answer
x = 85,320.46
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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.