Finding the Fourth Proportional to 75,430.13, 113,145.19 and 19,270.36
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Solution
The fourth proportional to 75,430.13, 113,145.19 and 19,270.36 is: 28,905.53
Step by Step Solution
- Step 1: Write the proportion equation
75,430.13 : 113,145.19 = 19,270.36 : x - Step 2: Convert to fraction form
75,430.13/113,145.19 = 19,270.36/x - Step 3: Cross multiply
75,430.13x = 113,145.19 × 19,270.36 - Step 4: Simplify right side
75,430.13x = 2,180,348,212.53 - Step 5: Solve for x
x = 2,180,348,212.53/75,430.13 - Step 6: Final answer
x = 28,905.53
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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.