Finding the Fourth Proportional to 74,486.39, 102,789.07 and 42,223.99
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Solution
The fourth proportional to 74,486.39, 102,789.07 and 42,223.99 is: 58,267.89
Step by Step Solution
- Step 1: Write the proportion equation
74,486.39 : 102,789.07 = 42,223.99 : x - Step 2: Convert to fraction form
74,486.39/102,789.07 = 42,223.99/x - Step 3: Cross multiply
74,486.39x = 102,789.07 × 42,223.99 - Step 4: Simplify right side
74,486.39x = 4,340,164,301.26 - Step 5: Solve for x
x = 4,340,164,301.26/74,486.39 - Step 6: Final answer
x = 58,267.89
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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.