Finding the Fourth Proportional to 84,555.99, 116,421.69 and 71,782.70
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Solution
The fourth proportional to 84,555.99, 116,421.69 and 71,782.70 is: 98,834.66
Step by Step Solution
- Step 1: Write the proportion equation
84,555.99 : 116,421.69 = 71,782.70 : x - Step 2: Convert to fraction form
84,555.99/116,421.69 = 71,782.70/x - Step 3: Cross multiply
84,555.99x = 116,421.69 × 71,782.70 - Step 4: Simplify right side
84,555.99x = 8,357,062,664.65 - Step 5: Solve for x
x = 8,357,062,664.65/84,555.99 - Step 6: Final answer
x = 98,834.66
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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.