Finding the Fourth Proportional to 105,645.65, 145,791.18 and 57,897.99
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Solution
The fourth proportional to 105,645.65, 145,791.18 and 57,897.99 is: 79,899.33
Step by Step Solution
- Step 1: Write the proportion equation
105,645.65 : 145,791.18 = 57,897.99 : x - Step 2: Convert to fraction form
105,645.65/145,791.18 = 57,897.99/x - Step 3: Cross multiply
105,645.65x = 145,791.18 × 57,897.99 - Step 4: Simplify right side
105,645.65x = 8,441,016,281.73 - Step 5: Solve for x
x = 8,441,016,281.73/105,645.65 - Step 6: Final answer
x = 79,899.33
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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.