Finding the Fourth Proportional to 84,009.70, 125,970.79 and 39,624.54
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Solution
The fourth proportional to 84,009.70, 125,970.79 and 39,624.54 is: 59,416.17
Step by Step Solution
- Step 1: Write the proportion equation
84,009.70 : 125,970.79 = 39,624.54 : x - Step 2: Convert to fraction form
84,009.70/125,970.79 = 39,624.54/x - Step 3: Cross multiply
84,009.70x = 125,970.79 × 39,624.54 - Step 4: Simplify right side
84,009.70x = 4,991,534,607.19 - Step 5: Solve for x
x = 4,991,534,607.19/84,009.70 - Step 6: Final answer
x = 59,416.17
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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.