Finding the Fourth Proportional to 75,681.72, 104,440.79 and 43,869.08
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Solution
The fourth proportional to 75,681.72, 104,440.79 and 43,869.08 is: 60,539.33
Step by Step Solution
- Step 1: Write the proportion equation
75,681.72 : 104,440.79 = 43,869.08 : x - Step 2: Convert to fraction form
75,681.72/104,440.79 = 43,869.08/x - Step 3: Cross multiply
75,681.72x = 104,440.79 × 43,869.08 - Step 4: Simplify right side
75,681.72x = 4,581,720,630.22 - Step 5: Solve for x
x = 4,581,720,630.22/75,681.72 - Step 6: Final answer
x = 60,539.33
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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.