Finding the Fourth Proportional to 98,432.99, 135,836.34 and 55,991.42
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Solution
The fourth proportional to 98,432.99, 135,836.34 and 55,991.42 is: 77,267.49
Step by Step Solution
- Step 1: Write the proportion equation
98,432.99 : 135,836.34 = 55,991.42 : x - Step 2: Convert to fraction form
98,432.99/135,836.34 = 55,991.42/x - Step 3: Cross multiply
98,432.99x = 135,836.34 × 55,991.42 - Step 4: Simplify right side
98,432.99x = 7,605,669,499.39 - Step 5: Solve for x
x = 7,605,669,499.39/98,432.99 - Step 6: Final answer
x = 77,267.49
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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.